Mahabharata Anushasna Parva Chapter 125:5

Mahabharata Anushasna Parva (Dana Dharma Parva) Chapter 125:5 Vrihaspati said, 'They who pass urine, facing the sun, they who do not show reverence for the wind, they who do not pour libations on the blazing fire, they who milk a cow whose calf is very young, moved by the desire of obtaining from her as much milk as possible, commit sins. I shall declare what those faults are, O lord of Sachi! Do thou listen to me. The Sun, Wind, the bearer of sacrificial oblations, O Vasava, and kine who are the mothers of all creatures, were created by the Self-born himself, for rescuing all the worlds, O Sakra! These are the deities of human beings. Listen all of ye to the conclusions of religion. Those wicked men and wicked women who pass urine facing the sun, live in great infamy for six and eighty years. That man, O Sakra, who cherishes no reverence for the wind, gets children that fall away prematurely from the womb of his spouse. Those men who do not pour libations on the blazing fire find that the fire, when they do ignite it for such rites as they wish to perform, refuses to eat their libations[]. Those men who drink the milk of kine whose calves are very young, never get children for perpetuating their races.[] Such men see their children die and their races shrink. Even these are the consequences of the acts referred to, as observed by regenerate persons venerable for age in their respective races. Hence, one should always avoid that which has been interdicted, and do only that which has been directed to be done, if one is desirous of achieving prosperity. This that I say unto thee is very true.' After the celestial preceptor had said this, the highly blessed deities, with the Maruts, and the highly blessed Rishis questioned the Pitris, saying, 'Ye Pitris, at what acts of human beings, who are generally endued with little understanding, do ye become gratified? What gifts, made in course of such rites as are gone through for improving the position of deceased persons in the other world, become inexhaustible in respect of their efficacy?[] By performing what acts can men become freed from the debt they owe to the Pitris? We desire to hear this. Great is the curiosity we feel.' The Pitris said, 'Ye highly blessed ones, the doubt existing in your minds has been properly propounded. Listen as we declare what those acts are of righteous men that gratify us. Bulls endued with blue complexion should be set free. Gifts should be made to us, on the day of the new moon, of sesame seeds and water. In the season of rains, lamps should be lighted. By these acts of men, they can free themselves from the debt they owe to the Pitris.[] Such gifts never become vain. On the other hand, they become inexhaustible and productive of high fruits. The gratification we derive from them is regarded to be inexhaustible.