Srimad-Bhagavatam: Canto 6 - Chapter 1 - Verse 16
Sanskrit:
अनुह्रादस्य सूर्यायां बाष्कलो महिषस्तथा ।विरोचनस्तु प्राह्रादिर्देव्यां तस्याभवद्बलि: ॥ १६ ॥
ITRANS:
anuhrādasya sūryāyāṁbāṣkalo mahiṣas tathāvirocanas tu prāhrādirdevyāṁ tasyābhavad baliḥ
Translation:
The wife of Anuhlāda was named Sūryā. She gave birth to two sons, named Bāṣkala and Mahiṣa. Prahlāda had one son, Virocana, whose wife gave birth to Bali Mahārāja.