Aghora-Mantra Japa: Graded Expiations, Pañcagavya Purification, and Homa for Mahāpātaka-Nivṛtti
अहोरात्रोषितः स्नातः पिबेत्कूर्चं शिवाग्रतः ब्राह्मं ब्रह्मजपं कुर्याद् आचम्य च यथाविधि
ahorātroṣitaḥ snātaḥ pibetkūrcaṃ śivāgrataḥ brāhmaṃ brahmajapaṃ kuryād ācamya ca yathāvidhi
昼夜持戒而住,沐浴既毕,应在湿婆尊前啜饮已加持的库尔恰净水;继而依仪轨行阿遮摩那(净口礼),并修行婆罗门之法——持诵梵(Brahman)圣咒之念诵(japa)——以净化缚魂paśu,使之得以亲近主宰Pati、湿婆。
Suta Goswami (narrating Shiva-puja procedure to the sages of Naimisharanya)
It sets the prerequisite purification sequence—vigil/discipline, bathing, sanctified sipping (kūrca), and proper ācamana—so the worshipper becomes fit to stand before Śiva and begin mantra-based worship.
Śiva is implied as Pati—the immediate divine presence before whom the paśu must be ritually and inwardly purified; nearness to Śiva-tattva is approached through śuddhi (purification) and brahman-oriented japa.
A preparatory sādhana combining vrata-like restraint (ahorātra discipline), snāna, ācamana, and Vedic mantra-japa—an outer-and-inner purification aligned with Pāśupata-oriented Śiva-pūjā.