 In the "Ramayana" the Vasu is child of the Soorpanaka.The "Mahabharata" relates how the Vasus, led by "Prithu" (presumably here a male form of Prithvi), were enjoying themselves in the forest, when the wife of Prabhasa spotted an excellent cow and persuaded her husband Prabhasa to steal it, which Prabhasa did with the agreement and aid of Prithu and his other brothers.Unfortunately for the Vasus, the cow was owned by the sage Vashishta who learned through his ascetic powers that the Vasus had stolen it and immediately cursed them to be born on earth as mortals.