ईशानकल्पवृत्तान्तः तथा लैङ्गपुराणस्य संक्षेप-सूची
संध्यांशकप्रमाणं च संध्यावृत्तं भवस्य च श्मशाननिलयश्चैव चन्द्ररेखासमुद्भवः
saṃdhyāṃśakapramāṇaṃ ca saṃdhyāvṛttaṃ bhavasya ca śmaśānanilayaścaiva candrarekhāsamudbhavaḥ
He (Bhava, Lord Śiva) is measured by the subtle “portion of twilight”, beyond ordinary reckoning; His mode is the twilight-state itself. He abides in the cremation-ground, and from Him arises the mark of the crescent moon.
Suta Goswami (narrating Śiva’s characteristics to the sages of Naimiṣāraṇya)
It frames Śiva as beyond ordinary measurement (pramāṇa) and as the Lord of liminal states; this supports Linga worship as contemplation of Pati who transcends time, death, and all boundaries symbolized by twilight and the cremation-ground.
Śiva-tattva is presented as boundary-transcending: present in the ‘twilight’ between opposites and sovereign even over death (śmaśāna). As Pati, He is not confined by worldly standards, yet He bears the crescent as a compassionate, accessible mark for devotion.
Meditation at saṃdhyā (dawn/dusk) is implied: a Pāśupata-leaning contemplative practice where the sādhaka focuses on Śiva as the Lord of transitions, using twilight-japa/dhyāna and remembrance of death (śmaśāna-bhāvanā) to cut pasha (bondage).