Garudapurana 1.5.9

1.5.9

tasyāṃ vai janayāmāsa balonmādau hariḥ svayam /
āyatirniyatiścaiva manoḥ kanye mahātmanaḥ //

Upon her Hari himself begat Bala and Unmāda. / Āyati and Niyati were the two daughters of the great-souled Manu;