Śivasaṃhitā 1.44

The error of perception does not modify what is perceived. This is the definitive lesson of the rope-and-snake analogy (rajju-sarpa), one of the most celebrated philosophical examples in Indian thought. The rope was always a rope: in the past, the present, and the future. The fear before the snake was real; the snake, never.

Kālatraya (the three times: past, present, and future) underscores the ātman’s impassiveness before time. The snake (sarpa) is a metaphor for the phenomenal universe that seems to arise from the pure ātman, but the ātman, being nirguṇa (without attributes), always remains identical to itself: without mixture, without transformation, without becoming.

The rajju-sarpa analogy is the paradigmatic example of the error of superimposition (adhyāsa) in Śaṅkara’s Advaita Vedānta. It appears in the Vivekacūḍāmaṇi and in the Brahmasūtra-bhāṣya. The Śivasaṃhitā integrates it here to defend the chapter’s central thesis: the universe is vivartavāda—appearance, not a real transformation of the Absolute.