Varaha Upanishad 4.39
जीवन्मुक्तपदं त्यक्त्वा स्वदेहे कालसात्कृते । विशत्यदेहमुक्तत्वं पवनोऽस्पन्दतामिव
Jīvan-mukta-padaṁ tyaktvā sva-dehe kāla-sāt-kṛte, viśaty adeha-muktatvaṁ pavano 'spandatām iva
Leaving behind even the state of liberation-while-living when his body falls in due course, he enters bodiless liberation — as the wind enters stillness.