trayyā
- by followers of the three Vedas who perform great sacrifices like Indra and other demigods — Antya 7.33
- by followers of three Vedas who perform great sacrifices (like the demigod Indra) — Madhya 19.204
- by studying the three Vedas (Sāma, Yajur and Atharva) — SB 10.8.45
- following the Vedic principles — SB 9.14.46
- having three divisions — SB 5.22.4
- the three Vedas — SB 7.3.30
trayyā vidyayā
- by performing ritualistic ceremonies according to Vedic principles — SB 5.20.3-4