athaikasādhanasādhyapramāṇāntarapravṛttimātreṇāpi parataḥ prāmāṇyam iṣṭam, tadā siddhasādhyateti manyamāna āha yathetyādi /
[The opponent], thinking that "if validity from an external source is accepted even merely through the operation of other means of cognition produced by the same means, then [our argument] would prove what is [already] proven," states "yathā" etc.