Śatapatha Brāhmaṇa ("of a hundred paths") 3.6.3.11

3.6.3.11

tadāyatsu vācayati | agne naya supathā rāya asmānviśvāni deva vayunāni vidvān yuyodhyasmajjuhurāṇameno bhūyiṣṭhāṃ te namauktiṃ vidhemetyagnimevaitatpurastātkarotyagniḥ purastānnāṣṭrā rakṣāṃsyapaghnannetyathābhayenānāṣṭreṇa haranti ta āyantyāgacantyāgnīdhraṃ tamāgnīdhre nidadhāti

While they proceed thither, he makes (the sacrificer) say the text (Vâg. S. V, 36; Rig-veda I, 189, 1), 'O Agni, lead us on a good path unto wealth, thou, O God, that knowest all works! keep thou from us the sin that leadeth astray, and we will offer unto thee most ample adoration!' He thereby places Agni in front, and Agni marches in front repelling the evil spirits; and they take him thither on a (way) free from danger and injury. They proceed, and reach the Âgnîdhra; and he (the Adhvaryu) puts (the fire) down on the Âgnîdhra hearth.