Mahabharata 1.72.1

वैशंपायन उवाच · vaiśaṃpāyana uvāca

समावृत्तव्रतं तं तु विसृष्टं गुरुणा तदाप्रस्थितं त्रिदशावासं देवयान्यब्रवीदिदम्

samāvṛttavrataṃ taṃ tu visṛṣṭaṃ guruṇā tadāprasthitaṃ tridaśāvāsaṃ devayānyabravīdidam

Our plain-language meaning of this verse is waiting for scholar review.