Śrīmad-Bhāgavatam · Text 3.12.46
Who is speaking and story frame
मज्जाया: पङ्क्तिरुत्पन्ना बृहती प्राणतोऽभवत् ॥ ४६ ॥
majjāyāḥ paṅktir utpannā
bṛhatī prāṇato ’bhavat
The art of writing verse, paṅkti, became manifested from the bone marrow, and that of bṛhatī, another type of verse, was generated from the life-breath of the lord of the living entities.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.