Sarvadarshanasangraha 10.47

10.47

Nor is the apprehension of a substratum necessary, because it is not accepted that the apprehension of a substratum is necessary in the cognition of an absence; otherwise, the destruction of sound in [the cognition] “The uproar has ceased” would not be perceptible. Thus the opponent's statement lacks authority. Keeping all this in mind, the venerable Kaṇāda composed the sūtra: “Darkness is an absence, because its production is differentiated from that of substance, quality, and action.”