Matsyapurana 2.28

2.28

yaḥ śarīrād abhidhyāya sisṛkṣurvividhaṃ jagat
apa eva sasarjādau tāsu vīryam avāsṛjat //

Svayambhu, with the desire of creating the universe, first created water and planted the seed of creation in it. The seed of creation, *i.e.*, chaitanya (consciousness) by coming into contact with water, produced a vast egg (*i.e.*, the egg of Brahmâ), of golden hue, which, after one thousand years, became ten thousand times more luminous than the sun. After that, Svayambhu merged Himself into that tremendous Brahmâṇḍa, and owing, to His omnipresence in it He came to be known as Viṣṇu.—28-30.