Vishnupurana 3.4.7

3.4.7

brahmaṇā codito vyāso vedān vyastuṃ pracakrame
atha śiṣyān sa jagrāha caturo vedapāragān //

When Vyása was enjoined by Brahmá to arrange the Vedas in different books, he took four persons, well read in those works, as his disciples. He appointed Paila reader of the Rich; Vaiśampáyana of the Yajush; and Jaimini of the Soma-veda: and Sumantu, who was conversant with the Atharva-veda, was also the disciple of the learned Vyása. He also took Súta, who was named Lomaharshańa, as his pupil in historical and legendary traditions.