Śatapatha Brāhmaṇa ("of a hundred paths") 1.4.1.24

1.4.1.24

gṛṇāno havyadātaya iti | yajamāno vai havyadātirgṛṇāno yajamanāyetyevaitadāha ni hotā satsi barhiṣītyagnirvai hotāyaṃ loko barhirasminnevaitalloke 'gniṃ dadhāti so 'yamasmiṃlloke 'gnirhitaḥ saiṣemameva lokamabhyanūktemamevaitayā lokaṃ jayati yasyaivaṃ viduṣa etāmanvāhuḥ

He proceeds, 'Invoked for the giver of oblations!' 'The giver of oblations,' of course, is the sacrificer: hence 'invoked for the sacrificer' is what he thereby means to say.--'As Hotri on the barhis sit!' Agni, indeed, is the Hotri, and the barhis (the covering of sacrificial grass on the altar) is this world: hence he thereby establishes Agni (the fire) in this world, as this fire is established (or, beneficial, hita) in this world. This (verse), then, is recited with reference to this world (the earth): through it this world is conquered by him for whom, knowing this, they recite this (verse).