“In this Sūtra Patañjali states that there are two ways
to discipline the five types of mental activity.
They are Abhyāsa and Vairāgya.
Abhyāsa is practice.
Vairāgya is to disconnect or sever the link
between the Citta and external objects.
These two, Abhyāsa and Vairāgya,
always go together as a pair.”
– T Krishnamacharya commentary on
Yoga Sūtra Chapter One verse 12