The Compendium of Caraka 4.1.91

4.1.91

pūrvarūpaṃ vikārāṇāṃ dṛṣṭvā prādurbhaviṣyatām/
yā kriyā kriyate sā ca vedanāṃ hantyanāgatām
pāraṃparyānubandhastu duḥkhānāṃ vinivartate/
sukhahetūpacāreṇa sukhaṃ cāpi pravartate//

Having observed the prodromal symptom of impending disorders, / the action that is taken destroys sensation that has not yet come; / but the continuous succession of sufferings ceases, / and happiness also begins, through treatment with the causes of happiness.