Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 16
Sanskrit:
तमाहुर्वासुदेवांशं मोक्षधर्मविवक्षया ।अवतीर्णं सुतशतं तस्यासीद् ब्रह्मपारगम् ॥ १६ ॥
ITRANS:
tam āhur vāsudevāṁśaṁmokṣa-dharma-vivakṣayāavatīrṇaṁ suta-śataṁtasyāsīd brahma-pāragam
Translation:
Śrī Ṛṣabhadeva is accepted as an expansion of the Supreme Lord, Vāsudeva. He incarnated in this world to propagate those religious principles that lead living entities to ultimate liberation. He had one hundred sons, all perfect in Vedic knowledge.