Mbh 12.245.2a

"'"Vyasa said, 'Having acquired (purity of conduct and body) by the practice of the first two modes of life, viz., Brahmacharya and domesticity, one should, after that, set one's soul on Yoga in the third mode of life. Listen now with concentrated attention to what should be done for attaining to the highest object of acquisition![1021] Having subdued all faults of the mind and of heart by easy means in the practice of the first three modes of life (viz., pupilage, domesticity, and seclusion) one should pass into the most excellent and the most eminent of all the modes, viz., Sannyasa or Renunciation. Do thou then pass thy days, having acquired that purity. Listen also to me. One should, alone and without anybody to assist him or bear him company, practise Yoga for attaining to success (in respect of one's highest object of acquisition). One who practises Yoga without companionship, who beholds everything as a repetition of his own self, and who never discards anything (in consequence of all things being pervaded by the Universal Soul), never falls away from Emancipation. Without keeping the sacrificial fires and without a fixed habitation, such a person should enter a village for only begging his food. He should provide himself for the day without storing for the morrow. He should betake himself to penances, with heart fixed on the Supreme.[1022] Eating little and that even under proper regulations, he should not eat more than once a day. The other indications of a (religious) mendicant are the human skull, shelter under trees, rags for wearing, solitude unbroken by the companionship of any one, and indifference to all creatures.[1023] That person into whom words enter like affrighted elephants into a well, and from whom they never come back to the speaker, is fit to lead this mode of life which has Emancipation for its object.[1024] The mendicant (or Renouncer) should never take note of the evil acts of any person.