Katha Upanishad Verse 2.2.4

Yama poses a rhetorical question about what remains when the eternal Atman (the “dweller in the body”) finally departs and is released from the physical frame. The implication is that without the Atman, the body is nothing more than inert matter. This realization confirms that the true identity lies with the indestructible Self, which survives the dissolution of the body.

Sanskrit Verse

अस्य विस्रंसमानस्य शरीरस्थस्य देहिनः । देहाद्विमुच्यमानस्य किमत्र परिशिष्यते । एतद्वैतत् ॥ ४ ॥

Transliteration

asya visraṃsamānasya śarīrasthasya dehinaḥ | dehādvimucyamānasya kimatra pariśiṣyate | etadvaitat || 4 ||

Translation

When this atman seated in the body escapes from the body what here remains? This verily is that.