SB 10.66.30-31

dakṣiṇa-agnim — to the Dakṣiṇa fire; paricara — you should render service; brāhmaṇaiḥ — brāhmaṇas; samam — together with; ṛtvijam — the original priest; abhicāra-vidhānena — with the ritual known as abhicāra (meant for killing or otherwise harming an enemy); सः — that; ca — and; agniḥ — fire; pramathaiḥ — by the Pramathas (powerful mystics who are in Lord Śiva’s retinue and who assume many different forms); vṛtaḥ — surrounded; sādhayiṣyati — it will accomplish; saṅkalpam — your intention; abrahmaṇye — against one who is inimical to brāhmaṇas; prayojitaḥ — utilized; iti — so; ādiṣṭaḥ — instructed; tathā — in that way; cakre — he did; kṛṣṇāya — against Lord Kṛṣṇa; abhicaran — intending to do harm; vratī — observing the required vows.