Shankaracharya's commentary, trans. Alladi Mahadeva Sastry (1897)
[1]Those men who ever follow this teaching of Mine with faith and without caviling, they too are freed from works.
BG 3.31
ये मे मतमिदं नित्यमनुतिष्ठन्ति मानवाः । श्रद्धावन्तोऽनसूयन्तो मुच्यन्ते तेऽपि कर्मभिः ॥
ye me matam idaṃ nityam anutiṣṭhanti mānavāḥ | śraddhāvanto 'nasūyanto mucyante te 'pi karmabhiḥ ||
"Practice this teaching with faith and without fault-finding — you are freed from karma. No full understanding required."
5 translations · all pre-1928 or released to public domain · sources
Those men who ever follow this teaching of Mine with faith and without caviling, they too are freed from works.
Those men who constantly practice this teaching of Mine, with faith and without caviling, they too are freed from karma.
But those men who constantly practice this doctrine of mine with faith and free from cavil are also released from the bondage of karma.
But those who practice what I preach, And those who, trusting, never cavil at it, — They, too, are quit of Karma and are free!
Men who constantly practice this teaching of mine, with faith and without carping, are also released from karma.