rg

ṛg-yajuḥ-sāma-atharva-ākhyāḥ the names of the four Vedas; SB 1.4.20
ṛg-veda-dharaḥ the professor of the Ṛg Veda; SB 1.4.21
sāma-ṛg-yajuḥ of the Sāma, Ṛg and Yajur Vedas; SB 10.53.12