Mbh 1.91.3

“Yayati answered, ‘These are what a Brahmacharin must do. While dwelling in the abode of his preceptor, he must receive lessons only when his preceptor summons him to do so; he must attend to the service of his preceptor without waiting for the latter’s command; he must rise from his bed before his preceptor riseth, and go to bed after his preceptor hath gone to bed. He must be humble, must have his passions under complete control, must be patient, vigilant, and devoted to studies. It is then only that he can achieve success. It hath been said in the oldest Upanishad that a grihastha, acquiring wealth by honest means, should perform sacrifices; he should always give something in charity, should perform the rites of hospitality unto all arriving at his abode, and should never use anything without giving a portion thereof to others. A Muni, without search for woods, depending on his own vigour, should abstain from all vicious acts, should give away something in charity, should never inflict pain on any creature. It is then only that he can achieve success. He, indeed, is a true Bhikshu who doth not support himself by any manual arts, who possesseth numerous accomplishments, who hath his passions under complete control, who is unconnected with worldly concerns, who sleepeth not under the shelter of a householder’s roof, who is without wife, and who going a little way every day, travelleth over a large extent of the country. A learned man should adopt the Vanaprastha mode of life after performance of the necessary rites, when he hath been able to control his appetites for enjoyment and desire of acquiring valuable possessions. When one dieth in the woods while leading the Vanaprastha mode of life, he maketh his ancestors and the successors, numbering ten generations including himself, mix with the Divine essence.’