Adhyaya 89: शौचाचारलक्षणम् — सदाचार, भैक्ष्यचर्या, प्रायश्चित्त, द्रव्यशुद्धि, आशौच-निर्णय
सपिण्डता च पुरुषे सप्तमे विनिवर्तते अतिक्रान्ते दशाहे तु त्रिरात्रमशुचिर्भवेत्
sapiṇḍatā ca puruṣe saptame vinivartate atikrānte daśāhe tu trirātramaśucirbhavet
For a man, sapinda-kinship (as relevant to death-rites) ceases at the seventh generation; and when ten days have passed, one is ritually impure only for three nights. Thus the rule of āśauca is regulated for the paśu (the bound soul), so that, after due purification, he may return to Shiva-ward conduct—worship of the Pati through disciplined rites.
Suta Goswami (narrating normative dharma within the Linga Purana discourse to the sages of Naimisharanya)
It sets eligibility boundaries for ritual purity: once the prescribed aśauca period is completed, the devotee can resume linga-puja, japa, and śaiva observances without violating dharma.
Indirectly, it frames Shiva as Pati—the ever-pure Lord—while the pashu must follow purification rules to approach His worship; purity disciplines the soul’s conduct toward liberation.
Ritual discipline (aśauca-niyama) connected to death-rites and purification, which safeguards the continuity of Shiva-puja and supports steadiness in sādhana (including Pashupata-aligned practice).