śanaiḥ kṣemāya kalpate

na-not; asnatah-those who eat; pathyam-suitable; eva-indeed; annam-food; vyadhayah-different types of disease; abhibhavanti-overcome; hi-indeed; evam-similarly; niyama-krt-one following regulative principles; rajan-O King; sanaih-gradually; ksemaya-for well-being; kalpate-becomes fit.