Brahma Purana 70.11

Brahmapurāṇa 70.11

indradyumnasya māhātmyam etac ca kathitaṃ mayā
sarvāścaryaṃ samākhyātaṃ rahasyaṃ puruṣottamam
purāṇaṃ paramaṃ guhyaṃ dhanyaṃ saṃsāramocanam //