The Compendium of Caraka 1.25.37

1.25.37

tasya khalu ye ye vikārāvayavā bhūyiṣṭhamupayujyante bhūyiṣṭhakalpānāṃ ca manuṣyāṇāṃ prakṛtyaiva hitatamāścāhitatamāśca tāṃstān yathāvadupadekṣyāmaḥ //

Indeed, whichever of its modified components are most commonly used, and are by their very nature most wholesome and most unwholesome for the majority of human beings, those we shall teach properly.