So Hum: Meaning, Translation, Pronunciation, and How to Chant
People commonly chant So Hum as a quiet breath meditation and contemplation of their deepest identity. In modern yoga practice, it is usually repeated mentally with So on the inhale and Hum on the exhale, while allowing the breath to stay natural. The mantra is commonly translated as “I am That.” Its Sanskrit form, so ’ham, comes from an early Upanishadic identity expression and later became closely associated with breath-centered yoga meditation.
The Mantra
Translation
I am That.
That one am I.
The underlying components are saḥ, “he” or “that one,” and aham, “I.” Sanskrit can form a sentence without an expressed verb, so so ’ham can convey “That one [am] I.” In the fuller Upanishadic expression so ’ham asmi, asmi explicitly means “I am.” Interpretations such as “I am universal consciousness” or “I am the Divine” go beyond the literal wording and depend on a particular philosophical context.
How to Pronounce the Mantra
soh-hum
Sustain the long o in soh. Pronounce hum with a short neutral vowel, somewhat like the u in English “but.”
| Mantra | Pronunciation | Notes |
|---|---|---|
| so | soh | The o is a long Sanskrit vowel. This sound results from the joining of saḥ with aham. |
| ’ham | hum | Pronounce the h clearly. The initial a of aham is elided in this form, and the apostrophe-like mark is not pronounced. |
Pronunciation Notes
- The precise transliteration is so ’ham. “So Hum” and “soh-hum” are convenient English teaching spellings.
- The apostrophe represents the Devanagari avagraha, a written mark for an elided vowel. It is not a pause or glottal stop.
- The audible portions so and ham should not be treated as two independent Sanskrit dictionary words.
- Pronunciation may vary slightly by region, teacher, and musical setting.
How to Chant So Hum
The commonly taught modern practice is simple: silently pair the mantra with your natural breathing.
Sit comfortably and let the breath move at its own pace without deliberately deepening or controlling it.
Mentally hear So while inhaling.
Mentally hear Hum while exhaling.
Let one inhale and one exhale make a single continuous cycle. When attention wanders, return gently to the breath and the mantra.
- Silent mental repetition with natural breathing
- Breath-awareness meditation
- Ajapa-japa contemplation, or awareness of a mantra understood to continue naturally with respiration
- Vedantic self-inquiry or contemplation of the phrase “I am That”
- Spoken or sung repetition in modern yoga and kirtan settings
No universal repetition count is prescribed for the simple breath-linked practice. Modern instruction often uses a chosen duration rather than a number of repetitions. Later yogic texts conventionally describe the Hamsa or Ajapa mantra as occurring 21,600 times through daily respiration, but this is a traditional calculation of breaths, not an instruction to perform 21,600 deliberate repetitions.
A mala is not necessary for the characteristic breath-linked form because breathing provides the rhythm. So ’ham may be repeated as ordinary japa in some modern settings, but no single mala count should be treated as canonical without a specific teacher or lineage reference.
The uncomplicated practice of mentally pairing So Hum with natural breathing is widely taught openly. More advanced Hamsa practices may include breath retention, bandha, nyasa, ritual mantras, or subtle-body visualization. These practices are lineage-specific and should be learned from a qualified teacher within the relevant tradition.
Mantra at a Glance
| Tradition | Upanishadic and Vedantic identity formula; later developed as a Hamsa and Ajapa breath mantra in yoga and tantra |
|---|---|
| Language | Sanskrit |
| Classification | Identity mantra, ajapa mantra, and breath-linked mental japa |
| Common translation | I am That |
| Associated with | Atman, brahman, Hamsa symbolism, and natural respiration |
| Earliest textual layer | The fuller expression so ’ham asmi appears in early Upanishadic texts |
| Common modern practice | Silent repetition of So on inhalation and Hum on exhalation |
| Access | Generally open in its simple breath-linked form; advanced ritual forms may require instruction |
Word-by-Word Meaning
| Mantra | Basic Meaning | Grammar / Context |
|---|---|---|
| saḥ → so | he; that one | Saḥ is a masculine nominative singular demonstrative pronoun. Before aham, Sanskrit sound change transforms saḥ + aham into so ’ham. The surface syllable so should not be independently translated as “universal consciousness” or “the Divine.” |
| aham → ’ham | I | Aham is the first-person singular nominative pronoun. Its initial a is elided in so ’ham and marked by the avagraha. The audible ham is not independently the phrase “I am.” |
| asmi | I am | Asmi is the first-person singular present form of the verb “to be.” It appears in the fuller expression so ’ham asmi but is usually omitted in the short mantra. |
What So Hum Means
So Hum is commonly translated as “I am That.” Practitioners may use it as a contemplation of the relationship between the everyday sense of self and a deeper reality, sacred presence, or ultimate truth.
Its literal force is more specifically “That one am I.” The phrase joins saḥ, meaning “he” or “that one,” with aham, meaning “I.” The identity expressed by “That” depends on the larger textual and philosophical context.
In Advaita Vedanta, So ’ham is often understood as a recognition that atman, the deepest Self, is not ultimately different from brahman, ultimate reality. This is a traditional nondual interpretation, rather than a dictionary definition of the words.
Other Vedantic traditions do not necessarily read the formula as an absolute equation of the individual soul and God. In devotional interpretations, “That” may refer to the indwelling Lord, the divine person, or a sacred presence contemplated through breath and awareness.
Atman, Brahman, and Hamsa
So Hum is associated more directly with a teaching about identity than with the invocation of one particular deity. In early Upanishadic settings, the expression can refer to the primordial Self or to the purusha, a sacred person or presence contemplated in relation to the sun.
Advaita Vedanta commonly understands “That” as brahman, ultimate reality, and understands the “I” as atman, the deepest Self. Other traditions may understand the relationship differently, including through the presence of the Lord within the individual.
Later yoga and tantric traditions connect the mantra with Hamsa, a Sanskrit word meaning goose or swan. Hamsa becomes a symbol of the self, the liberated sage, or the supreme Self, and is closely linked with the movement of breath.
Origin and History of the Mantra
So Hum has two related historical layers that are important to distinguish. The earlier layer is an Upanishadic identity expression. The later layer connects the phrase with breath-centered yoga and tantric practice.
Among the earliest secure textual witnesses is Bṛhadāraṇyaka Upaniṣad 1.4.1, which contains the fuller expression so ’ham asmi in a cosmogonic account. The primordial Self, seeing no other, declares “That one am I” or “I am.”
Īśā Upaniṣad 16 also contains so ’ham asmi within a prayer addressed to the sun. There, the speaker seeks to behold the purusha associated with the solar orb and identifies with that purusha. This passage does not prescribe the familiar modern technique of inhaling with So and exhaling with Hum.
Later Yoga Upanishads and tantric sources develop the connection between breath, Hamsa, and ajapa, meaning unuttered or naturally occurring japa. The Haṃsa Upaniṣad is an important witness to this developed ritual and contemplative framework, though it is substantially later than the oldest Upanishads and its precise date is uncertain.
Modern yoga and meditation schools commonly teach So Hum as an accessible breath-awareness practice. This approach often preserves the translation “I am That” while simplifying or omitting the older Upanishadic, Vedantic, and tantric contexts.
Traditional Interpretations
Advaita Vedanta: So ’ham is understood as recognition that the innermost Self is not ultimately different from brahman. In this reading, the formula points beyond identification with body, mind, and individual limitation.
Upanishadic solar contemplation: In Īśā Upaniṣad 16, the fuller phrase appears in a solar prayer concerning the purusha perceived within or beyond the solar orb. The short mantra is therefore drawn from a larger contemplative setting.
Hamsa and Ajapa Yoga: Later yoga traditions understand respiration as continually articulating haṃ-saḥ or so ’ham. Becoming aware of this natural mantra is itself a contemplative discipline.
Tantric interpretation: Some tantric and Yoga Upanishad systems give the sounds ritual functions and connect them with subtle anatomy, prana, visualization, nyasa, and guru transmission. These associations belong to specific traditions and are not part of the ordinary grammar of the short phrase.
Dvaita Vedanta commentary: A commentary attributed to Raghavendra Tirtha reads the Īśā passage through the indwelling presence of Vishnu. In this interpretation, the same Lord is present in the sun and within the individual, without requiring absolute identity between the individual soul and God.
Sanskrit and Grammar
So ’ham is the result of a Sanskrit sound rule called visarga sandhi. The underlying expression is saḥ aham. When saḥ comes before aham, the final sound changes, producing so ’ham.
The mark ऽ in Devanagari, represented by the apostrophe in transliteration, is called an avagraha. It indicates that the initial a of aham has been elided. It has no sound of its own.
The phrase functions as a nominal sentence: “That one [am] I.” Sanskrit does not need to state the verb in every sentence. In the fuller form so ’ham asmi, the word asmi explicitly supplies “I am.”
This grammar is why the second part should not be confused with the independent tantric bija hūṃ, often written “hum” in English. In So Hum, ham comes from aham, meaning “I.”
Variations of the Mantra
So Ham
A common English spelling that preserves two visible teaching units while omitting the avagraha and Sanskrit diacritics.
Soham
A common modern spelling that writes the sandhi form as one word.
So Hum
A modern phonetic spelling that helps English speakers approximate the sound. It can be misleading if confused with the unrelated bija hūṃ.
So ’ham Asmi
so ’ham asmi
The fuller Upanishadic expression, including asmi, the explicit Sanskrit verb meaning “I am.”
Hamsa
haṃsa / haṃsaḥ
A related breath-mantra sequence using the same sound elements in a complementary order. Later traditions often associate haṃ with outgoing breath and saḥ with incoming breath, though assignments vary by source and lineage.
Hamsa So ’ham
A later liturgical expansion found in some Ajapa and Hamsa explanations. It should not be presented as the sole original text of the short mantra.
How This Mantra Is Used Today
In contemporary yoga, So Hum is often taught as a silent cue for breath awareness: So on inhalation and Hum on exhalation. It may be used during seated meditation, relaxation, savasana, walking, or gentle movement.
It also appears in recordings and modern kirtan arrangements. Call-and-response singing is not intrinsic to the Sanskrit formula itself, but can be part of a contemporary musical setting.
The modern inhale-So and exhale-Hum pattern is widely taught, but older Hamsa explanations often describe the complementary sequence haṃ with exhalation and saḥ with inhalation. The apparent reversal partly depends on where the continuous breath cycle is divided.
Traditional sources support So Hum as a practice of contemplation, breath awareness, and attention to a naturally occurring mantra. They do not by themselves establish claims that the practice necessarily produces particular medical, psychological, energetic, or chakra-related effects.
Related Concepts
Ajapa-japa · Hamsa · Atman · Brahman · Prana · Avagraha · Visarga sandhi
Related Mantras
Hamsa Mantra · Aham Brahmasmi · Tat Tvam Asi · Shivoham
Common Questions About So Hum
What does So Hum literally mean?
The underlying Sanskrit is saḥ aham, literally “that one, I.” It is conventionally translated as “That one am I” or “I am That.”
Is So Hum one word or two words?
The precise Sanskrit form is so ’ham, produced by joining two underlying words, saḥ and aham. It is commonly written as So Hum, So Ham, or Soham in modern English-language teaching.
Is Hum in So Hum the tantric bija Hum?
No. The ham portion of so ’ham comes from aham, meaning “I.” It should not be confused with the independent tantric bija hūṃ, which is also often written “hum” in English.
Should So be used on the inhale or the exhale?
Modern yoga usually teaches So on inhalation and Hum on exhalation. Older Hamsa explanations often associate haṃ with exhalation and saḥ with inhalation. The difference partly depends on how the continuous breath cycle is segmented.
Does So Hum require initiation?
The simple practice of mentally pairing So Hum with natural breathing is widely taught openly. Advanced Hamsa forms involving ritual, breath retention, nyasa, or subtle-body methods may require qualified lineage instruction.
Must So Hum be repeated 108 times?
No universal count is established for the breath-linked practice. A mala is not required because the breath itself provides the rhythm. Traditional references to 21,600 repetitions refer to estimated daily breaths, not a required manual count.
Is So Hum an ancient breath meditation from the Isha Upanishad?
The fuller identity formula so ’ham asmi occurs in Īśā Upaniṣad 16, but that passage does not teach the familiar inhale-So and exhale-Hum practice. Explicit breath-mantra systems appear in later yogic and tantric traditions.
Is So Hum exclusively an Advaita mantra?
No. It is especially important in Advaita Vedanta, where it is often read nondually, but it occurs in shared Upanishadic literature and has also received theistic and dualist interpretations.
Sources and Further Reading
- Brihadaranyaka Upanishad: Proofed Sanskrit Text, Sanskrit Documents
- Ishavasyopanishad, Vedic Heritage Portal, Indira Gandhi National Centre for the Arts
- Isavasya Upanisad, A. J. Alston / Upasana Yoga
- Thirty Minor Upanishads, Translated by K. Narayanasvami Aiyar; Online Library of Liberty edition
- Explaining Mantras: Ritual, Rhetoric, and the Dream of a Natural Language in Hindu Tantra, Robert A. Yelle
- Year Long Meditation Practice Guide, Himalayan Institute
- Sandhi: The Avagraha and Visarga Sandhi, Learn Sanskrit Online
- Ishopanishad with Shri Raghavendra Swami's Commentary, Raghavendra Tirtha; Sanskrit Documents
- Dating and Authorship, Signe Cohen, The Classical Upaniṣads: A Guide, Oxford University Press
