Dvadasharanayacakra 6.32

6.32

atrāha --kathamatulyavikalpateti, asiddhamatulyavikalpatvamiti codakābhiprāyaḥ . atra catvāro bhaṅgāḥ sambhāvyante--yo vā kāraṇaṃ sat kāryaṃ ceti, yo vā kāraṇaṃ sat kāryamasat, kāryaṃ sat kāraṇamasat, kāryamasat kāraṇaṃ ceti vā . teṣu dvau sambhavetām, na dvau . tadyathā --iha kāryakāraṇayordvayorapi sattvaṃ kāryasattvameva vā ityetad vikalpadvayaṃ syāditi kāraṇaṃ sat kāryaṃ ca sat, kāraṇamasat kāryaṃ sat ityetau vikalpau bhavitumarhato netarāviti . kasmāt ? itarayorabhyupagatapratipakṣatvād vādābhāvāt, abhyupagataḥ pratipakṣo yasmin yena vā vādinā so'bhyupagatapratipakṣo vikalpo vādī vā, tadbhāvādabhyupagatapratipakṣatvāt, kiṃ bhavati ? vādābhāvo bhavati avasitaprayojanatvāt, paraścedabhyupagacchati kimiti vādaḥ kriyate ? tau ca vikalpau sat kāraṇamasat kāryam, asat kāraṇamasat kāryaṃ ca iti yadi tvamabhyupagacchasi avasitaprayojanaḥ syāmaham, ato vādābhāvādidaṃ vikalpadvayaṃ syāditi .