Adhyaya 89: शौचाचारलक्षणम् — सदाचार, भैक्ष्यचर्या, प्रायश्चित्त, द्रव्यशुद्धि, आशौच-निर्णय
चतुर्थ्यां स्त्री न गम्या तु गतो ऽल्पायुः प्रसूयते विद्याहीनं व्रतभ्रष्टं पतितं पारदारिकम्
caturthyāṃ strī na gamyā tu gato 'lpāyuḥ prasūyate vidyāhīnaṃ vratabhraṣṭaṃ patitaṃ pāradārikam
En el cuarto día lunar (Caturthī) no debe uno acercarse a una mujer para la unión carnal. De tal transgresión se dice que nace descendencia de vida breve—sin recto conocimiento, caída de los votos, degradada y inclinada a la mujer ajena—fortaleciendo así los lazos del pāśa que obstaculizan el avance del paśu hacia el Señor (Pati), Śiva.
Suta Goswami (narrating traditional dharma-niyamas within the Linga Purana discourse)
It frames sexual restraint on specific tithis as a supporting limb (aṅga) of Śiva-pūjā and vrata, protecting ritual purity and steadiness of mind for Linga-upāsanā.
By implication, Śiva as Pati is the liberating Lord, while violations of niyama intensify pāśa (bondage) for the paśu (individual soul), delaying fitness for Śiva’s grace.
Vrata-based brahmacarya (sexual restraint) aligned to lunar tithis—an ethical discipline that supports Pāśupata-oriented purification and steadiness for Śiva-pūjā.