tatra yadyevaṃ sāṅkhyādīṣṭānām anityatvaṃ sādhyate tadā siddhasādhyatāpakṣadoṣaḥ
If in this way the non-eternality of what is maintained by the Sāṅkhyas and others is being proved, then [there arises] the logical fault of proving what is [already] proved in the thesis