Aghora-Mantra Japa: Graded Expiations, Pañcagavya Purification, and Homa for Mahāpātaka-Nivṛtti
कृत्वा च गुरुतल्पं च पापकृद्ब्राह्मणो यदि रुद्रगायत्रिया ग्राह्यं गोमूत्रं कापिलं द्विजाः
kṛtvā ca gurutalpaṃ ca pāpakṛdbrāhmaṇo yadi rudragāyatriyā grāhyaṃ gomūtraṃ kāpilaṃ dvijāḥ
O twice-born ones, if a Brahmin—having become a doer of sin—commits the grave offence of violating the teacher’s bed (gurutaḷpa), then, taking the Rudra-Gāyatrī as the purifying mantra, he should partake of the urine of a tawny Kapilā cow as expiation. By the mantra-power of Rudra, the paśu (bound soul) turns back from pāśa (impurity and demerit) toward Pati, the Lord Śiva.
Suta Goswami (narrating prāyaścitta instructions within the Purva-Bhaga discourse)
It frames Śiva-mantra (Rudra-Gāyatrī) as a purifier that restores ritual and spiritual eligibility, implying that approach to the Liṅga requires cleansing of pāśa (impurity) through Śaiva means.
Śiva appears as Pati—the supreme purifier—whose mantra is efficacious even for severe transgression, showing Shiva-tattva as grace-bearing and transformative for the paśu bound by pāśa.
A prāyaścitta combining mantra-japa (Rudra-Gāyatrī) with a prescribed purificatory intake (Kapilā cow’s urine), reflecting Śaiva ritual purification aligned with Pāśupata-style reliance on Rudra-mantra.