bite the hand that feeds you

US /baɪt ðə hænd ðæt fiːdz ju/
UK /baɪt ðə hænd ðæt fiːdz ju/
"bite the hand that feeds you" picture
1.

morder a mão que te alimenta, ser ingrato

to harm someone who is helping you or providing for you

:
He shouldn't bite the hand that feeds him by criticizing his boss publicly.
Ele não deveria morder a mão que o alimenta criticando seu chefe publicamente.
After all the help they gave him, it was shocking to see him bite the hand that feeds him.
Depois de toda a ajuda que lhe deram, foi chocante vê-lo morder a mão que o alimenta.