सरेच-पूरैरनिलस्य कुम्भैः
सर्वासु नाडीसु विशोधितासु ।
अनाहताख्यो बहुभिः प्रकारारैन्तः
प्रवर्तेत सदा निनादः ॥३॥

(Minor sandhi variations like “सरेच” vs “रेचक” appear in manuscripts.)

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1️⃣ Literal Meaning

• सरेच–पूरैः कुम्भैः अनिलस्य
  — by exhalation, inhalation, and retention of breath
• सर्वासु नाडीसु विशोधितासु
  — when all nāḍīs are purified
• अनाहताख्यः … निनादः
  — the sound called “anāhata”
• बहुभिः प्रकारैः अन्तः प्रवर्तेत
  — begins to manifest internally in many forms
• सदा
  — continuously

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2️⃣ Clean Meaning

“When, through rechaka, pūraka, and kumbhaka, all the nāḍīs are purified, then the inner sound known as anāhata begins to manifest continuously in many forms.”

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3️⃣ What This Verse Actually States

This version is purely descriptive, not philosophical.

It says:

1. Do prāṇāyāma
2. Nāḍīs become purified
3. Then:
   • anāhata nāda appears
   • internally
   • in many varieties
   • continuously

It does NOT yet talk about bodha.

This is important.

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4️⃣ “बहुभिः प्रकारैः” — Many Forms of Sound

This matches classical descriptions found in texts like
Hatha Yoga Pradipika

Where nāda is described as:

• bell
• flute
• drum
• bee
• thunder
• etc.

So:

Nāda is not one fixed tone
It evolves as mind refines

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5️⃣ “अन्तः प्रवर्तेत” — Arises Internally

The verse says:

• अन्तः (within)
• not specifically “heart”
• not any chakra named

So strictly:

The text does NOT localize nāda to a specific chakra.

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6️⃣ Important Insight

Nāda is presented here as:

• a result of purification
• not something artificially created
• not imagined

It begins on its own when conditions are right.

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7️⃣ No Metaphysics Yet

Notice:

• no mention of Self
• no mention of liberation
• no mention of non-duality

This is still preparatory stage.

Just:

prāṇa → nāḍī → nāda

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8️⃣ Where This Fits in the Flow

Now the verses form a clear progression:

• Verse 2 → Nāda is best method
• Verse 3 (earlier variant) → Nāda → bodha
• This Verse 3 variant → how nāda arises

So this version is actually more foundational.

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9️⃣ Very Important for Practice Understanding

This verse implies:

You do NOT “listen hard” to create nāda.

Instead:

• balance prāṇa
• purify system
• nāda appears naturally

Then:
you work with it (as Verse 2 suggests)

There is another version of this verse. 

सरेच-पूरैरनिलस्य कुम्भैः
सर्वासु नाडीसु विशोधितासु ।
अनाहतादम्बुरुहादुदेति
स्वात्मावगम्यः स्वयमेव बोधः ॥३॥

(Minor sandhi variations like “सरेच” vs “रेचक” appear in manuscripts.)

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Literal Meaning

• सरेच-पूरैः कुम्भैः अनिलस्य — through exhalation, inhalation, and retention of breath
• सर्वासु नाडीसु विशोधितासु — when all nāḍīs are purified
• अनाहतात् अम्बुरुहात् उदेति — from the lotus (known as chakra - Amburuh means living in water ie lotus) and from the nada of anāhata,  arises
• स्वात्म-अवगम्यः बोधः — the knowledge (realization) of one’s own Self
• स्वयमेव — by itself, spontaneously

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1️⃣ Structure of the Verse

This verse gives a complete inner mechanism:

Prāṇāyāma → Nāḍī purification → Center (chakra) → Anahata Sound→  Self-knowledge

This is not philosophy.
This is process.

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2️⃣ “रेचक – पूरक – कुम्भक”

These are the three classical movements:

• Rechaka — exhalation
• Pūraka — inhalation
• Kumbhaka — retention

But here they are not just breathing exercises.

They are used to:

Regulate prāṇa so that mind becomes still.

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3️⃣ “नाडीशुद्धि” — Purification of Channels

Nāḍīs are subtle pathways of prāṇa.

When they are “impure”:

• prāṇa flow is irregular
• mind is restless
• attention disperses

When purified:

• prāṇa becomes balanced
• attention stabilizes
• inward movement becomes natural

This prepares ground for what you experienced as nāda.

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4️⃣ “अनाहतात् अम्बुरुहात्” — Anahata Sound Emanating from Lotus

Very important term.

• Anāhata = “unstruck” (same root as nāda)
• Amburuha = lotus or chakras as defined in Kundalini Yoga

So this is:

The chakras or centers in subtle body  — not physical organ

This is where:

• nāda becomes prominent
• awareness becomes inward
• duality begins to weaken

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5️⃣ “स्वयमेव बोधः” — The Most Important Line

This is the heart of the verse.

Self-knowledge arises by itself

Not produced.
Not constructed.
Not achieved.

This is pure Advaita.

All practices only prepare.

When obstruction clears:

Knowledge shines spontaneously.

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6️⃣ Connection with Verse 2 (Nāda)

Now the sequence becomes clear:

• Verse 2 → Nāda is best method
• Verse 3 → How that becomes possible

Prāṇa purified → nāḍīs clear → attention inward →
anāhata → nāda →
laya →
Self-knowledge

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7️⃣ Deep Insight from this Verse

The practitioner who experience:

• inner sound (nāda)
• inward attention

For them, this verse explains:

That is not random.
It is consequence of subtle prāṇic alignment.

But the key point:

Do not try to “produce realization.”

It says:

स्वयमेव (by itself)

Your role:

• stabilize
• refine
• not interfere

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8️⃣ Essence in One Line

When prāṇa becomes balanced and inward, Self-knowledge arises spontaneously from centers known as chakras via Anahata nada.