However, as proof of the contradictory opinion of the smriti on sati, in his Mitākṣarā, Vijñāneśvara argues Brahmin women are technically only forbidden from performing sati on pyres other than those of their deceased husbands. Quoting the Yājñavalkya Smṛti, Vijñāneśvara states, "a Brahmin woman ought not to depart by ascending a separate pyre." David Brick states that the Brahmin sati commentary suggests that the practice may have originated in the warrior and ruling class of medieval Indian society. In addition to providing arguments in support of sati, Vijñāneśvara offers arguments against the ritual.