Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 31
Sanskrit:
कच्चिद् गुरुकुले वासं ब्रह्मन् स्मरसि नौ यत: ।द्विजो विज्ञाय विज्ञेयं तमस: पारमश्नुते ॥ ३१ ॥
ITRANS:
kaccid gurukule vāsaṁbrahman smarasi nau yataḥdvijo vijñāya vijñeyaṁtamasaḥ pāram aśnute
Translation:
My dear brāhmaṇa, do you remember how we lived together in our spiritual master’s school? When a twice-born student has learned from his guru all that is to be learned, he can enjoy spiritual life, which lies beyond all ignorance.