Nadabindu upanishad

Yes. These verses are among the clearest descriptions of nāda-yoga in any Upanishad. They are also closely paralleled by the later Hatha Yoga Pradipika, suggesting this imagery became a standard description of inner sound meditation.

Here’s a word-by-word analysis of the key verses.

Verse 31

The Sanskrit contains words such as:

• Yogī (योगी) — the practitioner

• Siddhāsana (सिद्धासन) — the accomplished meditation posture

• Vaiṣṇavī Mudrā (वैष्णवी मुद्रा) — a specific meditative mudrā

• Sadā (सदा) — always

• Śṛṇuyāt (शृणुयात्) — should hear/listen

• Dakṣiṇa (दक्षिण) — right

• Karṇa (कर्ण) — ear

• Nāda (नाद) — sound, resonance, inner mystical sound

The essential instruction is:

“The yogin, seated in Siddhāsana and practicing Vaiṣṇavī Mudrā, should always listen to the inner nāda through the right ear.”

Verse 32

Important words:

• Bāhya — external

• Śabda — sounds

• Turīya — the “Fourth” state beyond waking, dreaming, and deep sleep

• Vighna — obstacles

The claim is that attention to the inner sound gradually overcomes distraction from external sounds and leads toward Turīya.

Verses 33–35

The Sanskrit says that the sounds begin gross (sthūla) and become subtle (sūkṣma).

Stage 1 (loud, gross sounds)

Keywords:

• Jaladhi (जलधि) — ocean

• Jīmūta (जीमूत) — thundercloud

• Bherī (भेरी) — kettledrum or war drum

• Jharjhara (झर्झर) — waterfall, cataract, rushing water

These are powerful, booming sounds.

Middle stage

Keywords:

• Mardala (मर्दल) — double drum

• Ghaṇṭā (घण्टा) — bell

• Kāhala (काहल) — trumpet, horn, bugle

The sounds become clearer and more musical.

Final subtle stage

Keywords:

• Kiṅkiṇī (किङ्किणी) — tiny tinkling bells

• Vaṃśa (वंश) — bamboo flute

• Vīṇā (वीणा) — vina, lute

• Bhramara (भ्रमर) — bee

These are very delicate, high-frequency sounds.

Complete progression

The Upanishad lists these sounds in roughly this order:

1. Ocean

2. Thundercloud

3. Kettle drum

4. Waterfall/cataract

5. Mardala drum

6. Bell

7. Trumpet or horn

8. Tiny bells

9. Flute

10. Vina (lute)

11. Bee

It then says these become “more and more subtle” (sūkṣma-sūkṣmatara) as meditation deepens.

The “mad elephant” metaphor

A few verses later (around verse 46 in many editions), the text gives one of its most famous metaphors.

Important Sanskrit words include:

• Citta — mind

• Matta — intoxicated, mad

• Gaja — elephant

• Aṅkuśa — elephant goad (the hook used by a mahout)

• Nāda — the inner sound

The imagery is striking:

The mind is like a wild, intoxicated elephant wandering through the forest of sense pleasures, and nāda acts like the elephant goad, bringing it under control.

The comparison is not merely poetic. In ancient India, an elephant goad (aṅkuśa) was the traditional tool used to direct a massive animal with surprisingly small movements. The Upanishad suggests that sustained attention to the inner sound serves a similar function: instead of trying to suppress the mind by force, one gently but persistently anchors it to the nāda until it becomes steady.

One interesting feature of the Nādabindu Upanishad is that it does not tell the meditator to chase every new sound. In fact, after listing them, it advises remaining absorbed in whichever sound the mind naturally settles upon, allowing attention to deepen rather than continually seeking a different or “higher” sound.