Yājñavalkya said:: Mārtaṇḍa (the Sun) gave those Yajur-Mantras to the intelligent Yājñavalkya who had assumed the form of horse. (Some) Brāhmaṇas study those Yajur Mantras by some means or the other. The Mantras had been given to (Yājñavalkya) who had assumed the form of a horse. Hence, those Brāhmaṇas became Vājins. Those by whom (the expiation for) Brahma-Hatyā had been observed are remembered as Carakas because they had performed (Caraṇāt) the atonement. The disciples of Vaiśampāyana are detailed as Carakas).