The Compendium of Caraka 1.8.17

1.8.17

tatrendriyāṇāṃ samanaskānāmanupataptānāmanupatāpāya prakṛtibhāve prayatitavyamebhirhetubhiḥ tadyathā sātmayendriyārthasaṃyogena buddhyā samyagavekṣyāvekṣya karmaṇāṃ samyak pratipādanena deśakālātmaguṇaviparītopāsanena ceti /

There, for the unafflicted senses accompanied by the mind, one should strive to keep them unafflicted in their natural state by means of these causes, namely: by wholesome contact with sense objects, by properly executing actions after having thoroughly examined them with the intellect, and by resorting to the opposites of the qualities of region, season, and constitution.