Vishnupurana 3.5.p3

3.5.p3

Having said this, he ejected from his stomach the texts of Yajush stained in blood. He then went away. The other pupils of Vaisampayana transforming themselves into partridges (Tittiri) picked up the texts which he had ejected, which, in consequence thereof, were called Taittriya and the pupils were named the Charaka professors, of the Yajush, from Charana —'going through.' Yājnawalka too, O Maitreya, who was accomplished in devout practices engaged in propitiating the sun, being desirous of recovering the texts of the Yajush.