Śatapatha Brāhmaṇa ("of a hundred paths") 3.1.3.26

3.1.3.26

sa yadāha | svāhā yajñam manasa iti tanmanasa ārabhate svāhororantarikṣāditi tadantarikṣādārabhate svāhā dyāvāpṛthivībhyāmiti tadābhyāṃ dyāvāpṛthivībhyāmārabhate yayoridaṃ sarvamadhi svāhā vātādārabha iti vāto vai yajñastadyajñam pratyakṣamārabhate

Now when he says, 'Hail, from the mind (I take hold of) the sacrifice,' he takes hold of it from the mind;--in saying, 'From the wide ether,' he takes hold of it from the ether;--in saying, 'From heaven and earth,' he takes hold of it from those two, heaven and earth, on which this entire universe rests;--and in saying, 'From the wind I take hold of (the sacrifice)'--the wind being the sacrifice--he takes hold of the sacrifice directly.