Bhagavad Gita Verse 15.14

मैं ही सब प्राणियों के शरीर के स्थित रहने वाला प्राण और अपान से संयुक्त्त वैश्वानर अग्निरूप होकर चार प्रकार के अन्न को पचाता हूँ ।

O Arjuna, at the same time, I also become the fire of life that exists in all things that breathe on this earth. Together, with the fiery breaths of life that flow in and flow out of body, I burn and digest the four kinds of pure foods on this earth, while residing in a being’s body.