viruddha (hetvābhāsa) NB 3.83-88: dvayo rūpayor viparyayasiddhau viruddhaḥ // kayor dvayoḥ // sapakṣe sattvasyāsapakṣe cāsattvasya // yathā kṛtakatvaṃ prayatnānantarīyakatvaṃ ca nityatve sādhye viruddho hetvābhāsaḥ // anayoḥ sapakṣe 'sattvam, asapakṣe ca sattvam iti viparyayasiddhiḥ // etau ca sādhyaviparyayasādhanād viruddhau // NPra 3. 2. 3: viruddhaś catuḥprakāraḥ / tadyathā / (1) dharmasvarūpaviparītasadhanaḥ, (2) dharmaviśeṣaviparītasādhanaḥ, (3) dharmisvarūpavipparītasadhanaḥ, (4) dharmiviśeṣa-viparītasādhanaś ceti // HTU 24: pakṣasapakṣayor nāsti / vipakṣa evāsti sa viruddhasaṃjñnako hetvābhāsaḥ / sādhyaviparyayasādhanāt // HTU 54: uktāḥ pañcaite viruddhasaṃjñakā hetvābhāsāḥ / TSop 3.14. dvayo rūpayor viparyayasiddhau viruddhaḥ / kayor dvayoḥ / sapakṣe sattvasyāsapakṣe cāsattvasya yathā kṛtakatvaṃ prayatnānantarīyakatvaṃ ca nityatve sādhye viruddhahetvābhāsaḥ // dvayor upādānam asapakṣavyāpyasapakṣaikadeśavṛttitvena bhedāt / anayoḥ sapakṣe 'sattvam asapakṣe ca sattvam iti viparyayasiddhiḥ / etau sādhyaviparyayasādhanād viruddhau // |