ṛgyajuḥsāmākhyās trayo vedās trayī bhaṇyate, tāṃ vidantīti trayīvido brāhmaṇā ucyante /
The three Vedas named Ṛg, Yajus and Sāman are called "trayī" [triad]; those who know them are called "trayīvid" [knowers of the three], [that is,] Brāhmaṇas.