Adhyaya 89: शौचाचारलक्षणम् — सदाचार, भैक्ष्यचर्या, प्रायश्चित्त, द्रव्यशुद्धि, आशौच-निर्णय
च्लेअनिन्ग् ओफ़् ओब्जेच्त्स् भस्मना शुध्यते कांस्यं क्षारेणायसम् उच्यते ताम्रमम्लेन वै विप्रास् त्रपुसीसकयोरपि
cleaning of objects bhasmanā śudhyate kāṃsyaṃ kṣāreṇāyasam ucyate tāmramamlena vai viprās trapusīsakayorapi
Oh brāhmaṇas, el bronce (kāṃsya) se purifica con bhasma, la ceniza sagrada; el hierro, se dice, con álcali; el cobre, con ácido; y lo mismo el estaño y el plomo. Así, para la Śiva-pūjā, el devoto debe purificar los utensilios rituales según su materia, removiendo la mala (impureza) antes de ofrecerlos a Pati (Śiva).
Suta Goswami (narrating Shiva-puja shauca rules to the sages of Naimisharanya)
It teaches dravya-śuddhi—purifying the very materials used in Linga-pūjā—so offerings become fit for Pati (Śiva) and the sādhaka reduces external mala (impurity) as a support for inner purity.
Śiva-tattva is implied as supremely pure (śuddha); therefore, the pious worshipper aligns the ritual field with that purity by cleansing implements, reflecting the Siddhānta principle that the Pāśu approaches Pati by removing mala and pasha-conditioned defilement.
Ritual shauca (purity discipline) in Shiva-pūjā—using bhasma, alkali, and acidic cleansers according to the metal—supporting the Pāśupata emphasis on disciplined preparation before worship and meditation.