SB 7.3.26-27: Let me offer my respectful obeisances unto the supreme lord within this universe. At the end of each day of his life, the universe is fully covered with dense darkness by the influence of time, and then again, during his next day, that self-effulgent lord, by his own effulgence, manifests, maintains and destroys the entire cosmic manifestation through the material energy, which is invested with the three modes of material nature. He, Lord Brahmā, is the shelter of those modes of nature—sattva-guṇa, rajo-guṇa and tamo-guṇa.