Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 10

Sanskrit:

एष देव दितेर्गर्भ ओज: काश्यपमर्पितम् ।दिशस्तिमिरयन् सर्वा वर्धतेऽग्निरिवैधसि ॥ १० ॥

ITRANS:

eṣa deva diter garbhaojaḥ kāśyapam arpitamdiśas timirayan sarvāvardhate ’gnir ivaidhasi

Translation:

As fuel overloads a fire, so the embryo created by the semen of Kaśyapa in the womb of Diti has caused complete darkness throughout the universe.

Purport:

The darkness throughout the universe is explained herewith as being caused by the embryo created in the womb of Diti by the semen of Kaśyapa.