SB 10.45.30-31

prabhavau sarva-vidyānāṁ
 sarva-jñau jagad-īśvarau
nānya-siddhāmalaṁ jñānaṁ
 gūhamānau narehitaiḥ
atho gurukule vāsam
 icchantāv upajagmatuḥ
kāśyaṁ sāndīpaniṁ nāma
 hy avanti-pura-vāsinam
Synonyms: 
prabhavau — They who were the origin; sarva — of all varieties; vidyānām — of knowledge; sarva-jñau — omniscient; jagat-īśvarau — the Lords of the universe; na — not; anya — from any other source; siddha — achieved; amalam — impeccable; jñānam — knowledge; gūhamānau — hiding; nara — humanlike; īhitaiḥ — by Their activities; atha u — then; guru — of the spiritual master; kule — in the school; vāsam — residence; icchantau — desiring; upajagatuḥ — They approached; kāśyam — the native of Kāśī (Benares); sāndīpanim nāma — named Sāndīpani; hi — indeed; avanti-pura — in the city of Avantī (modern Ujjain); vāsinam — living.
Translation: 
Concealing Their innately perfect knowledge by Their humanlike activities, those two omniscient Lords of the universe, Themselves the origin of all branches of knowledge, next desired to reside at the school of a spiritual master. Thus They approached Sāndīpani Muni, a native of Kāsī living in the city of Avantī.