Katha Upanishad - Verse 2.3.15
Text: यथा सर्वे प्रभिद्यन्ते हृदयस्येह ग्रन्थयः । अथ मर्त्यो’मृतो भवत्येतावद्ध्यनुशासनम् ॥ १५ ॥ yathā sarve prabhidyante hṛdayasyeha granthayaḥ | atha martyo’mṛto bhavatyetāvaddhyanuśāsanam || 15 || 15. When here all the knots of the heart are sundered, then the mortal becomes immortal. Thus, much, the instruction. Shankara’s Commentary: When again, the up-rooting of all desires takes place is explained. When all the ties of the heart of one, while yet alive, i....