Śatapatha Brāhmaṇa ("of a hundred paths") 5.2.4.14

5.2.4.14

athāpāmārgahomaṃ juhoti | apāmārgairvai devā dikṣu nāṣṭrā rakṣāṃsyapāmṛjata te vyajayanta yeyameṣāṃ vijitistāṃ tatho evaiṣa etadapāmārgaireva dikṣu nāṣṭrā rakṣāṃsyapamṛṣṭe tatho eva vijayate vijite 'bhaye 'nāṣṭre sūyā iti

Thereupon he performs the Apâmârgahoma; for by means of apâmârga plants (achyranthes aspera) the gods wiped away (apa-marg) the fiends, the Rakshas, in the quarters, and gained that universal conquest which now is theirs. And in like manner does this (Sacrificer) now by means of apâmârga plants wipe away the fiends, the Rakshas, in the quarters; and in like manner does he gain the victory, thinking, 'May I be consecrated, when safety and security have been gained!'