Mbh 12.234.1b

A Brahmana should teach, study, officiate at other people's sacrifices, and offer sacrifices himself. He should not give away in vain or accept other people's gifts in vain. Wealth, sufficient in quantity, that may come from one who is assisted in a sacrifice, from a pupil, or from kinsmen (by marriage) of a daughter, should be spent in the performance of sacrifice or in making gifts. Wealth coming from any of these sources should never be enjoyed by a Brahmana singly.[897] For a Brahmana leading a life of domesticity there is no means save the acceptance of gifts for the sake of the deities, or Rishis, or Pitris, or preceptor or the aged, or the diseased, or the hungry.[898] Unto those that are persecuted by unseen foes, or those that are striving to the best of their power to acquire knowledge, one should make gifts from one's own possessions, including even cooked food, more than one can fairly afford.[899] Unto a deserving person there is nothing that cannot be given. They that are good and wise deserve to have even the prince of steeds, called Uchchaisravas, belonging to Indra himself.[900] Of high vows (king) Satyasandha, having, with due humility, offered his own life-breaths for saving those of a Brahmana, ascended to heaven. Sankriti's son Rantideva, having given only lukewarm water to the high-souled Vasishtha, ascended to heaven and received high honours there. Atri's royal son Indradamana, possessed of great intelligence, having given diverse kinds of wealth to a deserving person, acquired diverse regions of felicity in the next world. Usinara's son Sivi, having given away his own limbs and the dear son of loins for the sake of a Brahmana, ascended to heaven from this world. Pratardana, the ruler of Kasi, having given away his very eyes to a Brahmana, obtained great fame both here and hereafter. King Devavridha, having given away a very beautiful and costly umbrella, with eight golden ribs, proceeded to heaven with all the people of his kingdom.