Śatapatha Brāhmaṇa ("of a hundred paths") 2.3.4.10

2.3.4.10

sa āha | upaprayanto adhvaramityadhvaro vai yajña upaprayanto yajñamityevaitadāha mantraṃ vocemāgnaya iti mantramu hyasmā etadvakṣyanbhavatyāre asme ca śṛṇvata iti yadyapyasmadārakādasyatha na etacūṇvevaivamevaitanmanyasvetyevaitadāha

He prays, 'Entering upon the worship--,' worship (adhvara) doubtless means sacrifice: 'entering upon the sacrifice' is what he means to say. '--Let us offer prayer to Agni--,' for he is indeed about to offer prayer to him; '--to him who hears us even from afar!' thereby he means to say, 'Although thou art afar from us, yet do thou hear this our (prayer), do thou so far think well of it!'