tadetat paratvāparatvasādhanamanaikāntikaṃ sādhyaviparkṣe 'pi hetor vṛttir iti darśayati yathā nīlādirūpāṇītyādi /
[The text] shows that this proof of priority and posteriority is inconclusive, since the reason occurs even in the opposite of what is to be proved, as in [the case of] blue and other colors.