Bhagavad Gita 15.14 Chapter 15, Verse 14

अहं वैश्वानरो भूत्वा प्राणिनां देहमाश्रितः ।
प्राणापानसमायुक्तः पचाम्यन्नं चतुर्विधम् ॥१५.१४॥

ahaṃ vaiśvānaro bhūtvā prāṇināṃ dehamāśritaḥ
prāṇāpānasamāyuktaḥ pacāmyannaṃ caturvidham

Meaning

Becoming the fire of digestion in the bodies of living beings, joined with the in-breath and out-breath, I digest the four kinds of food.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 15.14 (Chapter 15, The Yoga of the Supreme Person (Purushottama Yoga), Verse 14)