Mahabharata 3.91.22
ते यूयं मानसैः शुद्धाः शरीरनियमव्रतैःदैवं व्रतं समास्थाय यथोक्तं फलमाप्स्यथ
te yūyaṃ mānasaiḥ śuddhāḥ śarīraniyamavrataiḥdaivaṃ vrataṃ samāsthāya yathoktaṃ phalamāpsyatha
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book