Charak Samhita
तदेतन्न भवेद्वाच्यं सर्वमेव हतात्मसु। अरुजेभ्योऽद्विजातिभ्यः शुश्रूषा येषु नास्ति च ॥३८॥
Such a treatment should not be prescribed to those who have degenerate self, are disease free, are not twice born and who are reluctant to receive such a treatment.
english translation
tadetanna bhavedvAcyaM sarvameva hatAtmasu। arujebhyo'dvijAtibhyaH zuzrUSA yeSu nAsti ca ॥38॥
hk transliteration by Sanscript