Yoga Sūtra Chapter Two verse 53

धारणासु च योग्यता मनसः ॥५३॥

dhāraṇāsu ca yogyatā manasaḥ ||53||

And fitness of the mind for concentration.

dhāraṇā - concentrationca - andyogyatā - fitness, ability, capability, suitableness, proprietymanas - mind; that which objects of sense affect

Commentaries and Reflections

Commentary by Paul Harvey:

“As Prāṇāyāma dissolves the covering of the light,
fitness of the mind for concentration arises.”

Prāṇāyāma is a key to the door of Dhāraṇā.”