Śivasaṃhitā 4.85

The vigraha-siddhi reappears here as a result of Shakti-chālana, explicitly connecting it with the same siddhi promised for Vajrolī (verse 76). This convergence is not coincidence: both Vajrolī and Shakti-chālana work on the same energy — the prāṇa-śakti concentrated in the pelvic region — and produce the same type of somatic transmutation, albeit through different technical paths.

Aṇimā — ‘the capacity to become as small as an atom’ — is the first of the eight mahāsiddhis (great powers) enumerated in the Yogasūtra and the Purāṇas: aṇimā, laghimā, mahimā, prāpti, prākāmya, vaśitva, īśitva, and kāmāvasāyitā. The epithet ādimat (‘etc., and the other powers’) indicates that all eight great siddhis are attainable through the practice of Shakti-chālana. The complete list need not be enumerated because the text has already established the completeness of the promise.

Freedom from fear of death (mṛtyubhaya vivarjita) is not a separate benefit but the sign of vigraha-siddhi: a body that has completed the transmutation of Shakti-chālana is no longer organized around the logic of survival. The motivation of fear — which is the most fundamental motivation of the ego — dissolves when the practitioner recognizes that what in them can die is not the essential. This is the yoga of immortality that the chapter has promised since its opening.