Vibhūti Pāda · Sutra 16

परिणामत्रयसंयमादतीतानागतज्ञानम्

pariṇāmatrayasaṃyamādatītānāgatajñānam

From saṃyama on the three transformations arises knowledge of past and future.

Pariṇāmatraya are the three transformations: dharma, lakṣaṇa, and avasthā. Atīta is past. Anāgata is future. Jñāna is knowledge.

Here begins the list of siddhis, the powers that arise from saṃyama. The first: knowing the past and future.

By applying saṃyama to the transformations of form, time, and state of any object, the yogī can perceive its past and future states.

It is not divination or magic. It is direct perception of the temporal structure of the object. Just as reading tree rings reveals its history, saṃyama reveals the temporal continuum.

Commentators warn that this knowledge is not omniscience. It is specific to the object upon which saṃyama is applied.

This siddhi demonstrates that past, present, and future coexist in some way. The ordinary mind perceives only the present; the mind in saṃyama accesses the totality.