na cāpi yasya bhāvābhāvayoryasya bhāvābhāvau niyamena bhavataḥ tat tasya kāraṇam iti yuktam vyabhicārāt /
Nor is it correct [to say] that when the presence and absence of something invariably follows the presence and absence of something else, the latter is the cause of the former, because there are exceptions.