Mbh 13.163.2

"'Bhishma said, "If one, setting oneself to undertaking involving even great exertions, fails to earn wealth, one should then practise severe austerities. Unless seeds be sown, no crops appear. It is by making gifts (to deserving persons in this life) that one acquires (in one's next life) numerous objects of enjoyment, even as one becomes possessed of intelligence and wisdom by waiting upon those that are venerable for years. The wise have said that one becomes possessed of longevity by practising the duty of abstention from cruelty to all creatures. Hence, one should make gifts and not solicit (or accept them when made by others). One should worship those individuals that are righteous. Verily, one should be sweet-speeched towards all, and always do what is agreeable to others. One should seek to attain to purity (both mental and external). Indeed, one should always abstain from doing injury to any creature. When in the matter of the happiness and woe of even insects and ants, their acts (of this and past lives) and Nature constitute the cause, it is meet, O Yudhishthira, that thou shouldst be tranquil!"'"[627]