Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 34
Sanskrit:
तत्सुतो रुचकस्तस्य पञ्चासन्नात्मजा: शृणु ।पूरुजिद्रुक्मरुक्मेषुपृथुज्यामघसंज्ञिता: ॥ ३४ ॥
ITRANS:
tat-suto rucakas tasyapañcāsann ātmajāḥ śṛṇupurujid-rukma-rukmeṣu-pṛthu-jyāmagha-saṁjñitāḥ
Translation:
The son of Uśanā was Rucaka, who had five sons — Purujit, Rukma, Rukmeṣu, Pṛthu and Jyāmagha. Please hear of these sons from me.