अहं वैश्वानरो भूत्वा प्राणिनां देहमाश्रितः।
प्राणापानसमायुक्तः पचाम्यन्नं चतुर्विधम्।।15.14।।
।।15.14।। मैं ही समस्त प्राणियों के देह में स्थित वैश्वानर अग्निरूप होकर प्राण और अपान से युक्त चार प्रकार के अन्न को पचाता हूँ।।
Lord Krishna declares that He is vaisvanara the digestive fire which joins together with the vital breaths of prana or exhalation and apana or inhalation. Together they digest in the stomach the four kinds of food which are foods that are khadva or chewed, soshva or sucked, lehya or licked and peya or drank. In these last three verses Lord Krishna is specifying integral functions of the jivas or embodied beings and of the Earth that are manifestations of His opulent glories. The expressions that He becomes the light of the sun, moon and fire etc. are meant to indicate the predicated relationship that theses object have in regard to Him. That fact that such realtionships exist in reference to all things is substantiated in the next verse.