921 nyāyadarśanam atha caturthādhyāyasyādyam āhnikam
Adhyāya 4
Adhyāya 4, Āhnika 1
Adhyāya 4, Āhnika 1, Sūtra 1
manaso 'nantaraṃ pravṛttiḥ parīkṣitavyā/ tatra khalu yāvad dharmādharmāśrayaśarīrādi parīkṣitam, sarvā sā pravṛtteḥ parīkṣety āha —
pravṛttir yathoktā // 4.1.1 //
tathā parīkṣiteti//1//