Adhyāya 3, Āhnika 1, Sūtra 73
807tadupalabdhir itaretaradravyaguṇavaidharmyāt // 3.1.73 //
na śabdena guṇena saguṇam ākāśam indriyaṃ bhavati/ na śabdaḥ śabdasya vyañjakaḥ, na ca ghrāṇādīnāṃ svaguṇagrahaṇaṃ pratyakṣam, nāpy anumīyate/ anumīyate tu śrotreṇākāśena śabdasya grahaṇam, śabdaguṇatvaṃ ca ākāśasyeti/ pariśeṣaś cānumānaṃ veditavyam/ ātmā tāvat śrotā na karaṇam, manasaḥ śrotratve badhiratvābhāvaḥ, pṛthivyādīnāṃ ghrāṇādibhāve sāmarthyam, śrotrabhāve cāsāmarthyam/
808 asti cedaṃ śrotram ākāśaṃ ca śiṣyate, pariśeṣād ākāśaṃ śrotram iti//73//
iti śrīvātsyāyanīye nyāyabhāṣye tṛtīyādhyāyasyādyam āhnikam//
809 atha tṛtīyādhyāyāsya dvitīyam āhnikam