Yoga Sutra - Sādhana Pada 2.16
हेयं दुःखमनागतम् ॥१६॥
heyaṃ duḥkham-anāgatam ||16||
The dissatisfaction yet to come is to be avoided.
Suffering that has yet to manifest is to be avoided.
Past suffering has already been experienced, says Vyāsa, and presently experienced suffering has already activated and is bearing its fruits. Therefore, only suffering accruing in the future, anāgatam, can be avoided, heyam, and it is this suffering that is of concern to the yogī who Vyāsa, in the last verse, considered as sensitive as an eyeball. How can one give up suffering that has yet to come, in other words, suffering that does not yet exist? asks Vijñānabhikṣu rhetorically. By removing its cause, the subject of the next sūtra. Just as the present is the result of previous causes, and was once that which had yet to come, so future suffering has its seeds in the present and past. There are examples of this everywhere, says Vijñānabhikṣu: The earth has the potential to give rise to many effects that are as yet unmanifest, but their seeds lie stored in the present.
“However, the absolute removal of future suffering can be attained only by liberation, say the commentators—removing the identification between puruṣa and prakṛti. Again, this is the standard view: Gautama, the author of the Nyāya Sūtras, states that relief from suffering comes only from liberation (I.1.22). Likewise, Kaṇāda, the author of a series of sūtras foundational to the Vaiśeṣika school of philosophy, states that only when the mind is removed from its objects is one free from pain (V.2.16).