Adhyaya 89: शौचाचारलक्षणम् — सदाचार, भैक्ष्यचर्या, प्रायश्चित्त, द्रव्यशुद्धि, आशौच-निर्णय
दिवास्वप्नं विशेषेण तथा वै दन्तधावनम् मैथुनं मानसं वापि वाचिकं देवतार्चनम्
divāsvapnaṃ viśeṣeṇa tathā vai dantadhāvanam maithunaṃ mānasaṃ vāpi vācikaṃ devatārcanam
尤其是白昼睡眠,以及刷洗清洁牙齿;又如对交合之欲的放纵——无论在心念中或言语中——在礼敬神明之时皆当避免。此等禁制守护清净与一心,以成就湿婆供奉(Śiva-arcana),使 paśu 远离 pāśa,而趋向 Pati(湿婆)的恩 grace。
Suta Goswami
It sets behavioral restraints—especially avoiding daytime sleep and sexual indulgence in thought or speech—so the worshipper maintains śauca (purity) and ekāgratā (one-pointed focus) for Śiva-liṅga arcana.
By implication, Śiva is approached as Pati, the liberating Lord, through inner and outer purity; the verse stresses that bondage (pāśa) persists when the mind and speech remain entangled in sense-impulses.
A discipline of niyama for pūjā—restraint of body, speech, and mind (especially regarding maithuna)—aligned with Pāśupata-style control of vṛttis to keep the arcana inwardly pure.