Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 30-31
Sanskrit:
प्रभवौ सर्वविद्यानां सर्वज्ञौ जगदीश्वरौ ।नान्यसिद्धामलं ज्ञानं गूहमानौ नरेहितै: ॥ ३० ॥अथो गुरुकुले वासमिच्छन्तावुपजग्मतु: ।काश्यं सान्दीपनिं नाम ह्यवन्तिपुरवासिनम् ॥ ३१ ॥
ITRANS:
prabhavau sarva-vidyānāṁsarva-jñau jagad-īśvaraunānya-siddhāmalaṁ jñānaṁgūhamānau narehitaiḥ
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.