Rishi: Traditionally ascribed to the Puruṣa-sūkta seer-line (later Vedic attribution; often treated as śruti without a single human r̥ṣi in ritual pragmatics)
The Purusha, verily, is this All—what hath been and what shall be; and moreover he is the Lord of immortality, inasmuch as he waxeth beyond (all) by food.