Yoga Sutras of Patanjali · 2.16
हेयं दुःखमनागतम् ॥१६॥
heyaṁ duḥkham anāgatam
The suffering that has not yet come is to be avoided.
— Yoga Sutras of Patanjali 2.16
Source: Sanskrit attributed to Patanjali (c. 2nd century BCE – 4th century CE). Public-domain English readings drawn from Swami Vivekananda's 'Raja Yoga' (1896) and Charles Johnston's 'The Yoga Sutras of Patanjali' (1912).