Yoga Sūtra Chapter Three verse 6
tasya bhūmiṣu viniyogaḥ
“Its application is in stages.”
“The spirit of viniyoga is starting from where one finds oneself.
As everybody is different and changes from time to time,
there can be no common starting point and ready-made answers are useless.
The present situation must be examined and the habitually established status must be re-examined.”
- TKV Desikachar