yuktau tāvan na sādhyasādhanayor bhedaḥ, tathā hi tadbhāvabhāvitā hetuḥ kāryakāraṇatā sādhyā, na cānayor bheda upalabhyate paryāyatvāt tarupādapavat /
In logical reasoning, there is no difference between probandum and probans; because the reason [hetuḥ] is the fact of being produced only when something else exists [tadbhāvabhāvitā], and the causal relation is what is to be proved [sādhyā], and no difference is perceived between these two, as they are synonymous, like [the words] 'taru' and 'pādapa' [both meaning tree].