kiṃ ca pratyakṣānumānopamānaśabdāni catvāri pramāṇānīti saṅkhyāniyamo vyāhanyeta, anenaiva prakāreṇa pramāṇāntarasadbhāvāt
Moreover, the numerical restriction that "perception, inference, comparison and testimony are the four means of valid cognition" would be contradicted, since by this very method the existence of other means of valid cognition [could be proven].