Uttarajjhayana 12.44

12.44

tavo joī jīvo joiṭhāṇaṃ jogā suyā sarīraṃ kārisaṃgaṃ |
kamma ehā saṃjamajogasaṃtī homaṃ huṇāmī isiṇaṃ pasatthaṃ ||

"Austerity is my fire; the soul is the fireplace; the faculties of activity are the ladle; the body is the cow-dung fuel; / karma is the dried cow-dung cake; with the tranquility of the practice of self-restraint, I sacrifice the oblation praised by the seers."