anyathā hi śītasparśaṃ prati himādeḥ kṛtakasya kasyacit kāraṇatvopalambhāt sāmarthyācchītaviruddhoṣṇasparśaṃ pratyakṛtako hetuḥ kalpanīyaḥ syāt /
For otherwise, from observing that something produced like ice etc. is the cause with respect to cold touch, one would have to imagine by implication that something unproduced [must be] the cause with respect to warm touch, which is contrary to cold.