Scrutiny-
1.Determination of the meaning through Pramāṇa (organ of valid knowledge) whether the characteristic (attribute) is obtained in the object under scrutiny, or not.
uddiṣṭasya lakṣitasya ca yathāvallakṣaṇamupapadyate na vā iti pramāṇato'rthāvadhāraṇaṃ parīkṣā.(NyāKu 1.3 p. 21)
2.The cogitation undertaken for determination of the strength and the weakness of the different arguments presented in refutation by the opponent.
virnddhanānāyuktiprābalyadaurbalyāvadhāraṇāya pravartamāno vicāraḥ parikṣā.(Nyādī p. 8)