Mahabharata 5.44.4

5.44.4

sanatsujāta uvāca |
ye'smim̐lloke vijayantīha kāmānbrāhmīṃ sthitimanutitikṣamāṇāḥ |
ta ātmānaṃ nirharantīha dehānmuñjādiṣīkāmiva sattvasaṃsthāḥ || 4 ||

"Sanat-sujata said, 'They, who, residing in the abodes of their preceptors and winning their good will and friendship, practise Brahmacharya austerities, become even in this world the embodiments of Brahman and casting off their bodies are united with the Supreme Soul. They that in this world desirous of obtaining the state of Brahman, subdue all desires, and endued as they are with righteousness, they succeed in dissociating the Soul from the body like a blade projected from a clump of heath. The body, O Bharata, is created by these, viz., the father and the mother; the (new) birth, however, that is due to the preceptor's instructions is sacred, free from decrepitude, and immortal. Discoursing upon Brahman and granting immortality, he who wraps all persons with (the mantle of) truth, should be regarded as father and mother; and bearing in mind the good he does, one should never do him any injury. A disciple must habitually salute his preceptor with respect, and with purity (of body and mind) and well-directed attention, he must betake to study. He must not consider any service as mean, and must not harbour anger. Even this is the first step of Brahmacharya. The practices of that disciple who acquires knowledge by observing the duties ordained for one of his class are regarded also as the first step of Brahmacharya. A disciple should, with his very life and all his possessions, in thought, word and deed, do all that is agreeable to the preceptor.