BHAGAVAD GITA · CHAPTER 4, VERSE 30

Bhagavad Gita 4.30

अपरे नियताहाराः प्राणान्प्राणेषु जुह्वति। सर्वेऽप्येते यज्ञविदो यज्ञक्षपितकल्मषाः॥

Others, regulating their diet, offer life breath into life breath. All these practitioners understand sacrifice and are cleansed of sin through their practices.