Cetokhilasutta 3.5

3.5

Yo so, bhikkhave, bhikkhu sabrahmacārīsu kupito hoti anattamano āhatacitto khilajāto, tassa cittaṃ na namati ātappāya anuyogāya sātaccāya padhānāya.

This being so, their mind doesn’t incline toward keenness, commitment, persistence, and striving.