Recognition
Dhāraṇā 15 · The Unstruck Sound
Absorption in the anāhata — the unbroken sound flowing like a river in the cavity of the ear — carries the hearer from sound-Brahman to the supreme.
Every sound you have ever heard was struck — one thing meeting another. This dhāraṇā turns the ear toward a sound that nothing struck: anāhata, the unstruck, already sounding in the hollow of the ear for anyone who becomes quiet enough to notice it.
Finding it
The verse gives three identifying marks. It is heard pātra-karṇe — in the vessel of the ear, the inner hollow, not arriving from any direction outside. It is abhagna-śabda — unbroken: it does not begin, pause, or end the way struck sounds do. And it runs sarid-druta, swift as a river — continuous, streaming, alive. In practice: sit in deep quiet, or gently close the ears, and listen into the hearing itself. Beneath the body's noises a fine continuous resonance discloses itself — described across the literature as a hum, a rush, a high shimmer. Do not manufacture it by imagination and do not chase descriptions; take whatever unbroken stream you actually find.
The method is immersion
The operative word is niṣṇātaḥ — one who has plunged in, is steeped, literally bathed. This is not observation of a sound-object across a distance; it is entry into a current. Attend to the stream until attention itself is carried by it, the way a swimmer past the shallows stops walking and is taken. The verse then states the crossing with the precision of a proportion: steeped in śabda-brahman, the Absolute as sound, one arrives at paraṃ brahma, the Absolute beyond it. The river is real, and it is a river — it flows somewhere. Sound that nothing struck is vibration inherent in awareness itself; followed upstream, it delivers the listener to what is vibrating.
अनाहते पात्रकर्णेऽभग्नशब्दे सरिद्द्रुते । शब्दब्रह्मणि निष्णातः परं ब्रह्माधिगच्छति ॥ ३८ ॥
Absorbed in the unstruck (anāhata) sound, unbroken and flowing like a river, heard in the cavity of the ear — being well-versed in śabda-brahman (the Brahman as sound), one reaches the supreme Brahman.
कान के पात्र (गुहा) में सुनाई देने वाले, नदी के प्रवाह की भाँति अविच्छिन्न अनाहत नाद में लीन होकर, शब्दब्रह्म में निष्णात साधक परब्रह्म को प्राप्त कर लेता है।