But Chandra and Tara had a son and this son was called Budha. Budha married Ila and their son was called Pururava. Mitra and Varuna once cursed the apsara Urvashi that she would have to spend some time on earth. Urvashi appeared before King Pururava and the two happened to like each other. Pururava requested Urvahsi to be his wife and Urvashi accepted, subject to a condition. Two sheep were to saty forever near her bed and if the sheep were to be ever stolen, Urvashi would return to heaven. Pururava readily agreed. They lived quite happily for sixty thousand years.

Urvashi had no desire to return to heaven. But in Urvashi’s absence the gandharvas of heaven felt very lonely; they plotted ways of taking Urvashi back to heaven. One night they stole the two sheep. And since the condition was broken, Urvashi went back to heaven. Pururava and Urvashi however, had six sons, the eldest being Ayu.

But to remind Pururava of Urvashi, the gandharvas taught him the secret of fire and the king was instructed to divide this fire into three types. Earlier there used to be only one sort of fire. But Pururava introduced the three types of fire known as Garhapatya, Ahavaniya and Dakshina.In Pururava’s line was born Jahnu. Jahnu once saw that the bowl he used for his yajna was flooded with the water of the Ganga. He thereupon drank up the entire Ganga and restored the river only when the devarshis so requested. That is why Ganga is also called Jahnavi.