The deities have penances and Vedic rites. Darkness (or pride and cruelty), which destroys the former, has been adopted by the Asuras. This viz., Brahma, which has been said to have knowledge only for its quality, is difficult of attainment by either the gods or the Asuras.
तपो ह्यधिष्ठितं देवैस्तयोघ्नमसुरैस्तमः। एतद् देवासुरैर्गुप्तं तदाहुनिलक्षणम्॥