Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 9
Sanskrit:
तत: प्राकृतिक: सर्ग: सप्त वैकृतिकाश्च ये ।ततो ब्रह्माण्डसम्भूतिर्वैराज: पुरुषो यत: ॥ ९ ॥
ITRANS:
tataḥ prākṛtikaḥ sargaḥsapta vaikṛtikāś ca yetato brahmāṇḍa-sambhūtirvairājaḥ puruṣo yataḥ
Translation:
The creation effected by the agitation of the modes of material nature, the seven stages of evolution by elemental transformation, and the construction of the universal egg, from which arises the universal form of the Supreme Lord — all these are thoroughly described.