The Vishnu Purana
Chapters
The Vishnu Purana: Book IV: Chapter IV

Then there ensued a fierce contest, which, being on account of Táraká (or Tárá), was termed the Tárakámaya or Táraká war. In this the gods, led by Rudra, hurled their missiles on the enemy; and the Daityas with equal determination assailed the gods. Earth, shaken to her centre by the struggle between such foes, had recourse to Brahmá for protection; on which he interposed, and commanding Uśanas with the demons and Rudra with the deities to desist from strife, compelled Soma to restore Tárá to her husband. Finding that she was pregnant, Vrihaspati desired her no longer to retain her burden; and in obedience to his orders she was delivered of a son, whom she deposited in a clump of long Munja grass. The child, from the moment of its birth, was endued with a splendour that dimmed the radiance of every other divinity, and both Vrihaspati and Soma, fascinated by his beauty, claimed him as their child. The gods, in order to settle the dispute, appealed to Tárá; but she was ashamed, and would make no answer. As she still continued mute to their repeated applications, the child became incensed, and was about to curse her, saying, "Unless, vile woman, you immediately declare who is my father, I will sentence you to such a fate as shall deter every female in future from hesitating to speak the truth." On this, Brahmá again interfered, and pacified the child; and then, addressing Tárá, said, "Tell me, daughter, is this the child of Vrihaspati, or of Soma?" "Of Soma," said Tárá, blushing. As soon as she had spoken, the lord of the constellations, his countenance bright, and expanding with rapture, embraced his son, and said, "Well done, my boy; verily thou art wise:" and hence his name was Budha 2.