Mbh 7.69.1c

The seven Rishis, capable of producing everything by their fiat,[118] then milked the Earth, getting the Vedas as their milk. Vrihaspati became the milker, the Chhandas were the vessel, and the excellent Soma, the calf. The Yakshas, milking the Earth, got the power of disappearance at will as the milk in an unbaked pot. Vaisravana (Kuvera) became their milker, and Vrishadhvaja their calf. The Gandharvas and the Apsaras milked all fragrant perfumes in a vessel made of a lotus-leaf. Chitraratha became their calf, and the puissant Viswaruchi their milker. The Pitris milked the Earth, getting Swaha as their milk in a vessel of silver. Yama, the son of Vivaswat, became their calf, and (the Destroyer Antaka) their milker. Even thus was the Earth milked by that assemblage of creatures who all got for milk what they each desired. The very calves and vessels employed by them are existing to this day and may always be seen. The powerful Prithu, the son of Vena, performing various sacrifices, gratified all creatures in respect of all their desires by gifts of articles agreeable to their hearts. And he caused golden images to be made of every article on earth, and bestowed them all on the Brahmanas as his great Horse-sacrifice,[119] The king caused six and sixty thousand elephants to be made of gold, and all those he gave away unto the Brahmanas. And this whole earth also the king caused to be decked with jewels and gems and gold, and gave her away unto the Brahmanas. When he died, O Srinjaya, who was superior to thee as regards the four cardinal virtues and who, superior to thee, was, therefore, much superior to thy son thou shouldst not, saying “Oh, Swaitya, Oh, Swaitya,” grieve for the latter who performed no sacrifice and made no sacrificial present.’”’”