Śatapatha Brāhmaṇa ("of a hundred paths") 7.4.1.34

7.4.1.34

ājyena juhoti | vajro vā ājyaṃ vajreṇaivaitaprakṣāṃsi nāṣṭrā apahanti pañcagṛhītena pañcacitiko 'gniḥ pañca 'rtavaḥ saṃvatsaraḥ saṃvatsaro 'gniryāvānagniryāvatyasya mātrā tāvataivaitadrakṣāṃsi nāṣṭrā apahantyāgneyībhiragnirvai jyotī rakṣohāgninaivaitadrakṣāṃsi nāṣṭrā apahanti triṣṭubbhirvajro vai triṣṭubvajreṇaivaitadrakṣāṃsi nāṣṭrā apahanti sarvataḥ parisarpaṃ sarvābhya evaitaddigbhyo rakṣāṃsi nāṣṭrā apahanti

He offers with ghee; for the ghee is a thunderbolt: by the thunderbolt he thus repels the Rakshas, the fiends;--with fivefold-taken (ghee),--of five layers consists the fire-altar; five seasons are a year, and the year is Agni: as great as Agni is, as great as is his measure, with so much he thus repels the Rakshas, the fiends;--with (five) verses addressed to Agni, for the Rakshas-killing light is Agni: by Agni he thus repels the Rakshas, the fiends;--with trishtubh verses,--the Trishtubh is a thunderbolt: by the thunderbolt he thus repels the Rakshas, the fiends. On each side (he offers) moving round: in every quarter he thus repels the Rakshas, the fiends.