Knowing the anāhata sound, cause of all, incomparable origin of sound, blocking the ears and listening to the inner sound, the sage attains the supreme state.

Anāhata śabda — the “unstruck” sound, the sound that arises without anything producing it. Unlike all ordinary sounds that result from contact between objects, the inner nāda arises spontaneously.

Aśeṣa-hetum — cause of everything, without exception. The primordial sound from which manifestation emerges.

Anaupamyeyam — incomparable, without parallel. It cannot be described by analogy with anything known.

The practical technique:

• Karṇau pidhāya — blocking the ears (using the thumbs in Śāmbhavī mudrā or Yoni mudrā)
• Śabdam antaḥ — listening to the inner sound

By blocking external sounds, the subtle internal sounds become audible: buzzing, hissing, bells, flutes, thunder — different levels of nāda.

Following these sounds toward their source, muniḥ (the sage, the silent one) attains paraṃ padam — the supreme state, identical to samādhi.