Bhagavad Gita Chapter 4, Verse 31

यज्ञशिष्टामृतभुजो यान्ति ब्रह्म सनातनम् | नायं लोकोऽस्त्ययज्ञस्य कुतोऽन्यः कुरुसत्तम ||

yajñaśiṣṭāmṛtabhujo yānti brahma sanātanam nāyaṁ loko 'sty ayajñasya kuto 'nyaḥ kurusattama

Those who partake of the nectar-like remains of sacrifice go to the eternal Brahman. This world is not for the one who performs no sacrifice; how then can there be any other world, O best of the Kurus?

Krishna reveals the result of sacrifice: those who practice yajna reach the eternal Brahman. 'Yajñaśiṣṭāmṛtabhujaḥ' (those who partake of sacrifice remains as nectar) means the result of sacrifice is like nectar—purifying, elevating, liberating. The phrase 'yānti brahma sanātanam' (attain eternal Brahman) shows sacrifice leads to the ultimate goal. The statement 'nāyaṁ loko 'sty ayajñasya' (this world is not for one without sacrifice) emphasizes that sacrifice is essential—not optional. Without sacrifice, you can't even enjoy this world properly, let alone attain higher realms. Krishna's question 'kuto 'nyaḥ' (how can there be another?) reinforces: if you can't manage this world without sacrifice, how can you reach the eternal? This verse emphasizes that sacrifice isn't just spiritual practice—it's essential for living well.