Śrāddhadeva, or Vaivasvata Manu, the father of Mahārāja Ikṣvāku, was sonless before Ikṣvāku’s birth, but by the grace of the great sage Vasiṣṭha he performed a yajña to satisfy Mitra and Varuṇa. Then, although Vaivasvata Manu wanted a son, by the desire of his wife he got a daughter named Ilā. Manu, however, was not satisfied with the daughter. Consequently, for Manu’s satisfaction, the great sage Vasiṣṭha prayed for Ilā to be transformed into a boy, and his prayer was fulfilled by the Supreme Personality of Godhead. Thus Ilā became a beautiful young man named Sudyumna.