Śivasaṃhitā 3.65

Ghaṭāvasthā in the «supreme practice of breath» (pavanābhyāsana parā) is a threshold of relative immortality: the yogin who has stabilized this stage does not die in «hundreds of Brahma’s cycles.» One Brahma cycle equals 311 trillion years in Purānic cosmology. This hyperbole is not literal — it is the way Sanskrit texts express the category of aparyantakāla, time without perceptible limit.

Niṣpattāvasthā (the state of consummation, of perfect ripeness) is the fourth and final prāṇāyāma stage. Niṣpatti (from nis- + pat-, the fall toward perfection, complete ripening) designates the moment when the fruit falls from the tree — not pulled by effort but ripe through its own internal process. The yogin in niṣpatti does not practice yoga: they are yoga.

The destruction of «all karma seeds from the beginning» — ādikarmabīja — is the text’s most radical promise. The bījas (seeds) are karmas in potential state, not yet manifested. Destroying them before they germinate means there will be no new lives, new experiences, new bodies. The yogin has completed the cycle and «drinks the waters of immortality» — the amṛta flowing from the skull-moon to the heart-sun.