The Compendium of Caraka 4.2.45

4.2.45

haimantikaṃ doṣacayaṃ vasante pravāhayan graiṣmakamabhrakāle/
ghanātyaye vārṣikamāśu samyak prāpnoti rogānṛtujānna jātu //

Purging in spring the accumulation of doshas from the winter, in the rainy season that from the summer,
and at the departure of clouds that from the autumn, swiftly and properly, one never incurs seasonal diseases.