Śrīmad-Bhāgavatam · Text 11.17.30
Who is speaking and story frame
एवंवृत्तो गुरुकुले वसेद् भोगविवर्जित: ।
विद्या समाप्यते यावद् बिभ्रद् व्रतमखण्डितम् ॥ ३० ॥
evaṁ-vṛtto gurukule
vased bhoga-vivarjitaḥ
vidyā samāpyate yāvad
bibhrad vratam akhaṇḍitam
Until the student has completed his Vedic education he should remain engaged in the āśrama of the spiritual master, should remain completely free of material sense gratification and should not break his vow of celibacy [brahmacarya].
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.