Vaishnava Dharmashastra 1.58

1.58

tathā viditavedyānāṃ gatis tvaṃ puruṣottama
prapannāsmi jagannātha dhruvaṃ vācaspatiṃ prabhum //

'Thou art also the protector of those who know the Veda, O Purushottama. I have come, O Gagannâtha, to the immovable Vâkaspati (the lord of holy speech), the lord;