“Patañjali defines Yoga as a particular state of mind.
This can be developed through Abhyāsa and Vairāgya.
Abhyāsa is the effort to remain there,
Patañjali doesn’t say what this effort is.
Vairāgya is when somebody is not interested in
what is in the senses, or what is beyond the senses.”
– TKV Desikachar on Yoga Sūtra Chapter One verse 12

– TKV Desikachar Yoga Sūtra Study Quotes Collected and Collated
– T Krishnamacharya Yoga Sūtra Study Quotes Collected and Collated