The System of the Vedanta according to Badarayana's Brahma-Sutras and Cankara's Commentary c7.s5.t2.19

c7.s5.t2.19

1) So long as a cloth is rolled up, we cannot see whether it is a cloth or something else, and even if it be seen that it is a cloth, its real length and breadth are still unknown; if, however, it be unrolled, we perceive what it is, and how long or broad it is; as the rolled up and unrolled cloth are identical, so are cause and effect (p. 470, 1—10; the words 470, 7—9 seem to be an interpolation).