Nyāya Sūtras 32.4

32.4

yatra kiñcid arthajātam aparīkṣitam abhyupagamyate, astu dravyaṃ śabdaḥ sa tu nityo 'thānitya iti? dravyasya sato nityatānityatā vā tadviśeṣaḥ parīkṣyate, so 'bhyupagamasiddhāntaḥ svabuddhyatiśayacikhyāpayiṣayā parabuddhyavajñānāc ca pravartata iti//31//

Where a certain object is accepted without examination, [as in]: “Let sound be a substance; but is it eternal or non-eternal?”—the specific detail of the existent substance, namely its eternality or non-eternality, is examined; that is a provisional tenet, which proceeds from a desire to display the excellence of one's own intellect and from disregard for the intellect of the other. //31