The Supreme Personality of Godhead, the supreme controller, being pleased with Vasiṣṭha, gave him the benediction he desired. Thus Ilā was transformed into a very fine male named Sudyumna.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तस्मै कामवरं तुष्टो भगवान् हरिरीश्वरः । ददाविलाभवत्तेन सुद्युम्नः पुरुषर्षभः
tasmai kāmavaraṃ tuṣṭo bhagavān harirīśvaraḥ | dadāvilābhavattena sudyumnaḥ puruṣarṣabhaḥ
SB 9.1.22