Prakaraṇa 6 · Verse 4
आत्मैव केवलं सर्वम् इति निश्चयम् आस्थितः । प्राणापानौ समौ कृत्वा स्थितः परमशान्तिदृक् ॥
ātmaiva kevalaṃ sarvam iti niścayam āsthitaḥ | prāṇāpānau samau kṛtvā sthitaḥ paramaśāntidṛk ||
Clinging to the certainty that the Self alone is everything, equalizing inhalation and exhalation, one remains established as one whose vision is the supreme peace.