The Compendium of Caraka 1.7.64

1.7.64

ucite cāhite varjye sevye cānucite kramaḥ /
yathāprakṛti cāhāro malāyanagadauṣadham //

The step-by-step method of abandoning the unwholesome that has become accustomed and adopting the unaccustomed,
and diet according to constitutional nature, and medicine for the diseases of the channels of excretion;