Yoga Sūtra Chapter Two verse 41
सत्त्वशुद्धिः सौमनस्यैकाग्र्येन्द्रियजयात्मदर्शन योग्यत्वानि च ॥४१॥
sattva-śuddhi-saumanasya-eka-agrya-indriya-jaya-ātma-darśana-yogyatvāni ca ||41||
From purity of clarity,
open-mindedness, one-pointedness, mastery of the senses
and capability for seeing the essence.
Commentaries and Reflections
Commentary by S Ramaswami:
“All these things happen by Sattva Śuddhi.
One leads to other and without one-pointedness of mind it is not possible to know the soul beyond the senses.
Thus the previous Sūtra leads onto the aspect of the mind.
i.e. through food consumed.
If you practice cleanliness the mind becomes more and more Sattvic.”