Sushruta Samhita · Chapter 1.4

athātaḥ prabhāṣaṇīyamadhyāyaṃ vyākhyāsyāmaḥ //

yāthovāca bhagavān dhanvantariḥ //

adhigatamapyadhyayanamaprabhāṣitamarthataḥ kharasya candanabhāra iva kevalaṃ pariśramakaraṃ bhavati //

bhavati cātra /

yathā kharaścandanabhāravāhī bhārasya vettā na tu candanasya /

evaṃ hi śāstrāṇi baḥūnyadhītya cārtheṣu mūḍhāḥ kharavadvahanti //

tasmāt saviṃśamadhyāyaśatamanupadapādaślokamanuvarṇayitavyamanuśrotavyaṃ ca kasmāt sūkṣmā hi dravyarasaguṇavīryavipākadoṣadhātumalāśayamarmasirāsnāyusandhyasthigarbhasaṃbhavadravyasamūhavibhāgāstathā pranaṣṭaśalyoddharaṇavraṇaviniścayabhagnavikalpāḥ sādhyayāpyapratyākhyeyatā ca vikārāṇāmevamādayaścānye sahasraśo viśeṣā ye vicintyamānā vimalavipulabuddherapi buddhimākulīkuryuḥ kiṃ punaralpabuddheḥ tasmādavaśyamanupadapādaślokamanuvarṇayitavyamanuśrotavyaṃ ca //

anyaśāstropapannānāṃ cārthānāmihopanītānāmarthavaśātteṣāṃ tadvidyebhya eva vyākhyānamanuśrotavyaṃ kasmāt nahyekasmin śāstre śakyaḥ sarvaśāstrāṇāmavarodhaḥ kartum //

bhavanti cātra /

ekaṃ śāstramadhīyāno na vidyācchāstraniścayam /

tasmādbahuśrutaḥ śāstraṃ vijānīyāccikitsakaḥ //

śāstraṃ gurumukhodbīrṇamādāyopāsya cāsakṛt /

yaḥ karmakurute vaiyaḥ sa vaidyo'nye tu taskarāḥ //

aupadhenavamaurabhraṃ sauśrutaṃ pauṣkalāvatam /

śeṣāṇāṃ śalyatantrāṇāṃ mūlānyetāni nirdiśet //