The System of the Vedanta according to Badarayana's Brahma-Sutras and Cankara's Commentary c6.s8.t2.4

c6.s8.t2.4

A few similes may elucidate the relation of Brahman to His phenomenal forms. As the light of the sun or the moon, when it falls on the finger, shares in the finger's limitations, and in conformity with this, seems crooked when it is crooked, straight when it is straight, without in itself being crooked or straight, so also Brahman, when it is united with the limitation of the world of appearances, for example, of the earth, assumes its form, and on this is based (p. 807, 5) the apprehension of Brahman under different forms, as it is taught for the purpose of worship. It is therefore by no means purposeless; for all the words of the Upanishads have a purpose and are authoritative (p. 807, 8). But this does not prevent this view from resting on Ignorance all the same; for on inborn Ignorance depends worldly action as well as that prescribed by the Vedas (p. 807, 12).