चतुर्थे चायुष: शेषे वानप्रस्थाश्रमं त्यजेत् । सद्यस्कारां निरूप्येष्टिं सर्ववेदसदक्षिणाम्
caturthe cāyuṣaḥ śeṣe vānaprasthāśramaṃ tyajet | sadyaskārāṃ nirūpyeṣṭiṃ sarvavedasadakṣiṇām ||
Vyāsa said: When the fourth and final portion of one’s lifespan remains, one should relinquish the forest-dweller’s stage (vānaprastha). Having arranged the immediate rites and instituted a sacrificial offering with the gifts (dakṣiṇā) prescribed by all the Vedas, one should proceed onward—marking the ethical transition from household and ritual obligations toward complete renunciation.
व्यास उवाच
The verse teaches āśrama-dharma: as life enters its final quarter, one should let go of the forest-dweller stage and, after duly completing necessary rites and Veda-sanctioned sacrificial obligations with proper gifts, move toward full renunciation and spiritual single-mindedness.
Vyāsa is laying down a normative guideline for the progression of life-stages. He describes the transition point late in life: completing remaining ritual responsibilities (including an iṣṭi with appropriate dakṣiṇā) and then abandoning vānaprastha, implying the next step toward a renunciate ideal.