Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 9
Sanskrit:
तास्वपत्यान्यजनयदात्मतुल्यानि सर्वत: ।एकैकस्यां दश दश प्रकृतेर्विबुभूषया ॥ ९ ॥
ITRANS:
tāsv apatyāny ajanayadātma-tulyāni sarvataḥekaikasyāṁ daśa daśaprakṛter vibubhūṣayā
Translation:
Just to expand Himself according to His transcendental features, the Lord begot in each and every one of them ten offspring with exactly His own qualities.