Adhyaya 89: शौचाचारलक्षणम् — सदाचार, भैक्ष्यचर्या, प्रायश्चित्त, द्रव्यशुद्धि, आशौच-निर्णय
नमस्कारादिकं सर्वं गुरुशुश्रूषणादिकम् वस्त्रशौचविहीनात्मा ह्य् अशुचिर्नात्र संशयः
namaskārādikaṃ sarvaṃ guruśuśrūṣaṇādikam vastraśaucavihīnātmā hy aśucirnātra saṃśayaḥ
礼拝・合掌礼など一切の行い、さらには師(グル)への奉仕に至るまで、清らかな衣の浄さを欠く者は、まことに不浄である—疑いはない。束縛されたパシュ(魂)が主宰パティ(シヴァ)の恩寵を求めるとき、外の清潔と内の清浄とが相まって、シヴァ・プージャーとパーシュパタの戒律にふさわしい資質を支える。
Suta Goswami
It states that even devotional acts like namaskāra and guru-sevā lose ritual efficacy if the worshipper neglects basic śauca—especially clean garments—thereby stressing eligibility (adhikāra) for Liṅga-pūjā.
By implication, Śiva as Pati is approached through ordered discipline: purity and restraint refine the Pashu and reduce pasha-like impurities, making the aspirant fit for Śiva’s grace.
Śauca as a foundational observance—clean clothing and bodily purity—supporting proper Śiva-pūjā and the preparatory discipline aligned with Pāśupata practice.