Puranic Encyclopaedia: A Comprehensive Dictionary with Special Reference to the Epic and Puranic Literature c7.843

c7.843

2) Vaivasvata Manu and Śraddhā had, for a long time no children. Manu got performed once by Agastya a yajña to propitiate the Mitrāvaruṇas so that a son might be born to him (Manu). Soon a daughter was born to him and she was called Ilā. Then Manu asked Vasiṣṭha why a daughter was born to him instead of a son for whom the yajña was performed by Agastya. At once, Vasiṣṭha by his will-power turned the girl Ilā into a boy, and the boy was named Sudyumna. (Bhāgavata).