Sadācāra–Varṇa-lakṣaṇa and Prātaḥkṛtya
Right Conduct, Social Typologies, and Morning Purification
निशांत्यायामोषा ज्ञेया यामार्धं संधिरुच्यते । तत्काले तु समुत्थाय विण्मूत्रे विसृजेद्द्विजः
niśāṃtyāyāmoṣā jñeyā yāmārdhaṃ saṃdhirucyate | tatkāle tu samutthāya viṇmūtre visṛjeddvijaḥ
Khoảng cuối đêm được gọi là uṣā (bình minh); đó là “sandhi” (thời khắc giao) kéo dài nửa một yāma. Khi ấy, người hai lần sinh (dvija) nên thức dậy và bài tiết phân, nước tiểu để thực hành sự thanh tịnh tự nhiên.
Suta Goswami (narrating traditional Shaiva dharma and observances to the sages)
Tattva Level: pashu
Shiva Form: Sadāśiva
Significance: General: emphasizes śauca (purity) at the sandhi of night and day; such bodily purification is treated as prerequisite for temple entry, liṅga-sevā, and mantra-japa.
It teaches śauca (purity) and disciplined timing: rising at dawn-sandhi and completing bodily purification is presented as the proper foundation for later Sandhyā, japa, and Shiva-pūjā—outer order supporting inner steadiness on the path to moksha.
Linga-worship emphasizes cleanliness and readiness of body-mind; by instructing purification at dawn-sandhi, the text aligns the devotee with an auspicious time for approaching Saguna Shiva in ritual, so the subsequent offerings, mantra-japa, and meditation are done without impurity.
A practical dinācārya step: rise at dawn-sandhi (uṣā), attend to natural elimination and cleanliness first, and then proceed to Sandhyā, Shiva mantra-japa (such as the Pañcākṣarī), and worship with a purified body and focused mind.