anyathā hi kvacid bāṣpādirūpeṇa sandihyamānasya dhūmasyānyatvābhāvād agamakatvān niścitasyāpi vahnau sādhye na liṅgatā prāpnoti /
For otherwise, when smoke is doubted due to [its] appearing in the form of vapor and such, due to its non-indicativeness resulting from its being something else, even when [smoke] is ascertained, it would not attain the status of being an indicator in proving fire.