Śrīmad-Bhāgavatam · Text 3.22.35
Who is speaking and story frame
अयातयामास्तस्यासन् यामा:स्वान्तरयापना: ।
शृण्वतो ध्यायतो विष्णो: कुर्वतो ब्रुवत: कथा: ॥ ३५ ॥
ayāta-yāmās tasyāsan
yāmāḥ svāntara-yāpanāḥ
śṛṇvato dhyāyato viṣṇoḥ
kurvato bruvataḥ kathāḥ
Consequently, although his duration of life gradually came to an end, his long life, consisting of a Manvantara era, was not spent in vain, since he ever engaged in hearing, contemplating, writing down and chanting the pastimes of the Lord.
Read Śrīla Prabhupāda's purport on Vedabase.io