SB 12.11.49

vālakhilyāḥ sahasrāṇi
 ṣaṣṭir brahmarṣayo ’malāḥ
purato ’bhimukhaṁ yānti
 stuvanti stutibhir vibhum
Synonyms: 
vālakhilyāḥ — the Vālakhilyas; sahasrāṇi — thousands; ṣaṣṭiḥ — sixty; brahma-ṛṣayaḥ — great sages among the brāhmaṇas; amalāḥ — pure; purataḥ — in front; abhimukham — facing the chariot; yānti — they go; stuvanti — they offer praise; stutibhiḥ — with Vedic prayers; vibhum — to the almighty lord.
Translation: 
Facing the chariot, the sixty thousand brāhmaṇa sages known as Vālakhilyas travel in front and offer prayers to the almighty sun-god with Vedic mantras.