सन्दिग्धे वस्तुनि प्रमाणेन तत्त्वपरीक्षा विचारः ।
sandigdhe vastuni pramāṇena tattva-parīkṣā vicāraḥ |
(Goyīcandraḥ; cited in Śabda-kalpa-druma)
“Examination of the true nature (tattva) of an uncertain object by valid means of acquiring certain knowledge (pramāṇa) is [called] vicāra.”
Alternate version
सन्दिग्धवस्तुनि प्रमाणेन तत्त्वपरीक्षा विचारः ।
sandigdha-vastuni pramāṇena tattva-parīkṣā vicāraḥ |
(Amṛta-ṭīkā on Hari-nāmāmṛta-vyākaraṇa: 87)
“Examination of the true nature (tattva) of an uncertain object by valid means of acquiring certain knowledge (pramāṇa) is [called] vicāra.”