Mbh 13.83.2

"'Bhishma continued, "Having heard these words of the self-born Brahman, O Yudhishthira, Sakra of a thousand eyes began from that time to worship kine every day and to show them the greatest respect. I have thus told thee everything about the sanctifying character of kine, O thou of great splendour. The sacred and high pre-eminence and glory of kine, that is capable of cleansing one from every sin, has, O chief of men, been thus explained to thee. That man who with senses withdrawn from every other object will recite this account unto Brahmanas, on occasions when Havya and Kavya are offered, or at sacrifices, or on occasions of adoring the Pitris, succeeds in conferring upon his ancestors an inexhaustible felicity fraught with the fruition of every wish. That man who is devoted to kine succeeds in obtaining the fruition of every wish of his. Indeed, even those women that are devoted to kine succeed in obtaining the accomplishment of every wish of theirs. He that desireth sons obtaineth them. He that desireth daughters obtaineth them. He that desireth wealth succeedeth in acquiring it and he that desireth religious merit succeedeth in winning it. He that desireth knowledge acquireth it and he that desireth felicity succeedeth in acquiring it. Indeed, O Bharata, there is nothing that is unattainable to one that is devoted to kine."'"