Brahma Sutras 2.9

अत्ता चराचरग्रहणात् ॥

atta charachara-grahanat

The eater is Brahman, because both the moving and the non-moving are taken as food.

अत्ता (ग्रहण करने वाला) [ब्रह्म है] क्योंकि [उसके द्वारा] चर और अचर [दोनों] का ग्रहण होता है ॥