The Yoga Sutras of Patanjali Text 3.9

The Yoga Sutras of Patanjali
Text 3.9

vyutthana-nirodha-samskarayor abhibhava-pradurbhavau nirodha-
ksana-cittanvayo nirodha-parinamah

TRANSLATION
The state of restraint, nirodha, is when there is a disappearance of outgoing [i.e. worldy] samskaras and the appearance of restraining samskaras. These emerge in the mind at the moment of restraint.