yadi hi sambhavet kāryasyāpi kāraṇavikārāpādanavat sākṣād vikārāpādanaṃ syāt, nopādānavikārāpādanadvāreṇaiva/
For if [direct modification] were possible, then the effect too could be modified directly like the cause's modification, not only through the modification of [its] material cause.