The System of the Vedanta according to Badarayana's Brahma-Sutras and Cankara's Commentary c7.s3.t2.11

c7.s3.t2.11

(1) The cause need not necessarily be homogeneous and manifold; (a) not homogeneous: for the threads and their combinations need not be homogeneous, and still less the efficient cause, the loom (but no one ever maintained this).— Or is homogeneity to be asserted of the inherent cause only? That cannot be maintained unconditionally. For a single cord is twisted out of yarn and cow-hair; and many cloths are woven from thread and [unspun] wool. Or does the homogeneity of the cause only demand that it must be one being and one substance? That is self-evident, and the requirement is superfluous. (b) Further, the cause need not be manifold. For also the atoms of Kaṇāda work each for itself. It is not necessary that the cause should consist of several factors; for the effect can also be the result of transformation, since a substance passes into a different condition, and is then called the effect. The substance in this case may be manifold, as the earth and the seed that go to form plants, or uniform, as milk, which becomes curds. And so, according to the scripture, from the uniform Brahman, the manifold world, with space and all creatures, has sprung (p. 621, 5—623, 4).