The Compendium of Caraka 1.6.5_1

1.6.5_1

ādānaṃ punarāgneyaṃ tāvetāvarkavāyū somaśca kālasvabhāvamārgaparigṛhītāḥ kālarturasadoṣadehabalanirvṛttipratyayabhūtāḥ samupadiśyante //

The debilitating period, however, is solar. These very three—the sun, the wind, and the moon—governed by time, nature, and path, are taught as the causal conditions for the production of time, seasons, tastes, doṣas, and bodily strength.