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
夜の終わりの時分はウシャー(uṣā)すなわち暁と知られ、半ヤーマにわたる「サンディ」(sandhi、接合の刻)と呼ばれる。その時、起き上がった二度生まれ(ドヴィジャ)は、自然の浄めとして大便と小便を排すべきである。
Suta Goswami (narrating traditional Shaiva dharma and observances to the sages)
Tattva Level: pashu
Shiva Form: Sadāśiva
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.