ब्रह्मार्पणं ब्रह्महविर्ब्रह्माग्नौ ब्रह्मणा हुतम्। ब्रह्मैव तेन गन्तव्यं ब्रह्मकर्मसमाधिना।।4.24।।
brahmārpaṇaṁ brahma havir brahmāgnau brahmaṇā hutam brahmaiva tena gantavyaṁ brahma-karma-samādhinā
Brahman is the oblation; Brahman is the melted butter (ghee); by Brahman is the oblation poured into the fire of Brahman; Brahman indeed shall be attained by one who always sees Brahman in action.