Verse 39

चेतसा कृतमाप्नोषि चेतसा न कृतं तु न ।न क्वचित्कारणे देहो न च चित्तेन कर्तृता

In plain words

What is done by the mind, that you obtain; what is not done by the mind, that you do not. The body is never in the place of the cause; nor is there agency through citta.