Mahabharata Adi Parva describes in detail the lunar dynasty. From Vaivaswata manu > Ila > Pururavas > Ayus to Nahusha.
It was Pururavas who first brought from the region of the Gandharvas the three kinds of fire (for sacrificial purpose). And he brought thence, the Apsara Urvasi also. And the son of Ila begat upon Urvasi six sons who were called Ayus, Dhimat, Amavasu and Dhridhayus, and Vanayus, and Satayus.
and,
And it is said that Ayus begat four sons named Nahusha
How does Ila's children/dynasty link to Chandra (moon) or his son Budha?
