yadyevaṃ samayas tarhi vyarthaḥ, pratyakṣānupalambhābhyām eva kāryakāraṇabhāvasya niścitatvād ity āha kāryakāraṇabhāvaścetyādi /
"If that is so, then convention is useless, since the causal relation is already established through perception and non-apprehension alone," [thus] he says.