व्यासशिष्योत्पत्तिवर्णन (Origins/Enumeration of Vyāsa’s Disciplic Succession) — Chapter on Vedic Transmission Lineages
यो वात्र सप्तरात्रेण नागच्छेद्द्विजसत्तमः / स कुर्याद्ब्रह्महत्यां वै समयो नः प्रकीर्तितः
yo vātra saptarātreṇa nāgaccheddvijasattamaḥ / sa kuryādbrahmahatyāṃ vai samayo naḥ prakīrtitaḥ
Whoever, though a foremost twice-born, does not arrive here within seven nights, shall indeed incur the sin of brahmahatyā; this is the time-limit we have proclaimed.