The Compendium of Caraka 4.2.47

4.2.47

matirvacaḥ karma sukhānubandhaṃ sattvaṃ vidheyaṃ viśadā ca buddhiḥ/
jñānaṃ tapastatparatā ca yoge yasyāsti taṃ nānupatanti rogāḥ//

One whose thought, speech, and action have a pleasant consequence, whose mind is disciplined, whose intellect is clear,
and who possesses knowledge, austerity, and devotion to yoga—diseases do not afflict him.