Mahabharata Aswamedha Parva Chapter 90:8

Mahabharata Aswamedha Parva (Anugita Parva) Chapter 90:8 The fame of thy achievement will last in the world. With thy wife, thy son, and thy daughter-in-law, go now to Heaven.'—After the deity of Righteousness had said these words, that Brahmana, with his wife, son and daughter-in-law, proceeded to Heaven. After that learned Brahmana, conversant with all duties, had thus ascended to Heaven with his son, daughter-in-law, and wife numbering the fourth, I came out of my hole. There with the scent of that powdered barley, with the mire caused by the water (which the Brahmana had given to his guest), with the contact (of my body) with the celestial flowers that had been rained down, with the particles of the barley-powder which that good man had given away, and the penances of that Brahmana, my head became gold. Behold, in consequence of the gift of that Brahmana who was firm in truth, and his penances, half of this my ample body has become golden. Ye regenerate ones, for converting the rest of my body into gold I repeatedly repair, with a cheerful heart, to the retreats of ascetics and the sacrifices performed by kings. Hearing of this sacrifice of the Kuru king endued with great wisdom, I came hither with high hopes. I have not, however, been made gold. Ye foremost of Brahmanas, it was for this that I uttered those words, viz., that this sacrifice can by no means compare with (the gift of) that prastha of powdered barley. With the grains of that prastha of powdered barley, I was made gold on that occasion. This great sacrifice however, is not equal to those grains. Even this is my opinion." Having said those words unto all those foremost of Brahmanas, the mongoose disappeared from their sight. Those Brahmanas then returned to their respective homes. Vaisampayana continued, 'O conquerer of hostile towns, I have now told thee all relating to that wonderful incident which occurred in that great Horse-sacrifice. Thou shouldst not, O king, think highly of sacrifice. Millions of Rishis have ascended to Heaven with the aid of only their penances. Abstention from injury as regards all creatures, contentment, conduct, sincerity, penances, self-restraint, truthfulness, and gifts are each equal in point of merit to sacrifice.