Brahmaagnau Brahmanaa Hutam
Brahmaiva Tena Gantavyam
Brahma Karma Samaadhinaha
The act of offering is Brahman.
The offering itself is Brahman.
The offering is done by Brahman in the sacred fire which is Brahman. He alone attains Brahman who, in all actions, is fully absorbed in Brahman.
this might clear the confusion of people who consider brahman to be a rigid system or birth right..instead it is a philosphy..those who follow the phillosphy and act accordingly are true brahmans..much like hinduism is a philosphy and to be a true hindu one doesnt have to keep fast or sing chants all day but follow the philosphy of hinduism and act accordingly.