The offering is Brahman, the oblation is Brahman, poured by Brahman into the fire of Brahman; Brahman alone is to be attained by him, who is absorbed in the action (karma) of Brahman.
The infinite spirit is the offering, the oblation it pours into infinite fire, and the infinite spirit can be reached by contemplating its infinite action.
(24) The offering is Brahman, Brahman the [sacrificial] ghee offered by Brahman in Brahman's fire: who sinks himself in this [sacrificial] act which is Brahman, to Brahman must he thereby go.
4.24 The ladle is Brahman [Some translate as 'Brahman is the ladle...,' etc.-Tr.], the oblations is Brahman, the offering is poured by Brahman in the fire of Brahman. Brahman alone is to be reached by him who has concentration on Brahman as the objective [As an object to be known and attained. (Some translate brahma-karma-samadhina as, 'by him who sees Brahman in action'.)
4.24 Brahman is the instrument to offer with; Brahman is the oblation. By Brahman is the oblation offered into the fire of Brahman; Brahman alone is to be reached by him who meditates on Him in his works.
4.24 Brahman is the oblation; Brahman is the melted butter (ghee); by Brahman is the oblation poured into the fire of Brahman; Brahman verily shall be reached by him who always sees Brahman in action.