वासिष्ठकथनम् (आदित्य–सोमवंशवर्णनम् तथा रुद्रसहस्रनाम-प्रशंसा)
मातृहा पितृहा चैव वीरहा भ्रूणहा तथा संवत्सरं क्रमाज्जप्त्वा त्रिसंध्यं शङ्कराश्रमे
mātṛhā pitṛhā caiva vīrahā bhrūṇahā tathā saṃvatsaraṃ kramājjaptvā trisaṃdhyaṃ śaṅkarāśrame
Even one who has slain a mother or a father, a hero, or an embryo—having performed the prescribed japa for a full year, in due order, at the three daily junctions (dawn, noon, and dusk) while dwelling in Śaṅkara’s āśrama—becomes purified through devotion to Pati (Śiva), as the bonds (pāśa) of grievous sin are cut by His mantra-discipline.
Suta Goswami (narrating the Śaiva prāyaścitta teaching within the Purva-bhāga discourse)
It frames severe sin as removable through disciplined Śiva-oriented practice—year-long mantra-japa at the three sandhyās—implying that turning to Pati (Śiva) via regulated sādhana is central to purification and eligibility for Śaiva worship.
Śiva is implied as Pati—the liberating Lord whose mantra and āśrama-discipline can sever pāśa (bondage) even when karmic impurity is extreme, highlighting His grace working through rule-bound practice.
Trisaṃdhyā mantra-japa for one full year, performed in proper order under Śaṅkara-āśrama discipline—an ascetic, Pāśupata-leaning regimen of daily regulated repetition as prāyaścitta.