संध्याचरित्रवर्णनम् (Sandhyā-caritra-varṇanam) — “Narration of Sandhyā’s Austerity and Encounter with Śiva”
एकान्तमनसस्तस्याः कुर्वंत्या सुमहत्तपः । शंभौ विन्यस्तचित्ताया गतमेकं चतुर्युगम्
ekāntamanasastasyāḥ kurvaṃtyā sumahattapaḥ | śaṃbhau vinyastacittāyā gatamekaṃ caturyugam
她以独处专一之心修行极大苦行;又以意识安住于商布(主湿婆),四劫合一的完整轮回已然流逝。
Sūta Gosvāmī (narrating to the sages at Naimiṣāraṇya)
Tattva Level: pashu
Shiva Form: Sadāśiva
Shakti Form: Satī
Role: liberating
Cosmic Event: caturyuga-kāla (one full cycle of four yugas) elapsing during uninterrupted tapas
It highlights ekāgratā (one-pointed absorption) in Śiva as the core of transformative tapas: when the mind is firmly established in Pati (Śiva), endurance, purity, and spiritual power mature beyond ordinary measures of time.
Fixing the mind on Śambhu indicates Saguna-upāsanā—devotion to Śiva with attributes and presence. In Śaiva practice this commonly takes the form of steady remembrance and worship of the Śiva-liṅga as the accessible focus for sustained meditation.
The verse suggests prolonged japa and dhyāna with unwavering focus—classically expressed through pañcākṣarī japa ("Om Namaḥ Śivāya"), accompanied by disciplined vows and simple worship (e.g., liṅga-arcana with water), emphasizing steadiness over display.