因明入正理論疏 3.37

3.37

問：「有性既為有法自相，離實有性是其差別，有一實因便是有法差別之因。如何今說為自相過？」答：「彼宗意許離實有性，實是差別，言陳有性既是自相，今非此言陳，即是違自相，故自相過，非差別因。若不爾者，極成所別皆無此過，違自宗故。」

Question: 'Since existence-ness is the own-character of the subject, and existence-ness apart from substance is its qualification, the reason "possessing one substance" is then a reason for the qualification of the subject. How can it now be called a fault against the own-character?' Answer: 'That school intends existence-ness apart from substance, which is truly a qualification; but since the explicitly uttered existence-ness is the own-character, now negating this explicit utterance is precisely contradicting the own-character. Therefore it is a fault against the own-character, not a reason regarding a qualification. Were it not so, universally established subjects would all lack this fault, because of contradicting one's own school.'