The Compendium of Caraka 3.8.17_1

3.8.17_1

tathāvidhena saha kathayan visrabdhaḥ kathayet, pṛcchedapi ca visrabdhaḥ, pṛcchate cāsmai visrabdhāya viśadamarthaṃ brūyāt, na ca nigrahabhayādudvijeta, nigṛhya cainaṃ na hṛṣyet, na ca pareṣu vikattheta, na ca mohādekāntagrāhī syāt, na cāviditamarthamanuvarṇayet, *samyak cānunayenānunayet, tatra cāvahitaḥ syāt/

Speaking with such a person, one should speak with confidence and inquire with confidence; to one inquiring with confidence, one should state the matter clearly. One should not become anxious out of fear of defeat, nor should one rejoice upon defeating him. One should not boast before others, nor cling obstinately to one side out of delusion, nor describe a matter that is not understood. One should conciliate properly with reasoning, and remain attentive in that [discussion].