bite the hand that feeds (someone)

Traduzioni
кусать руку, которая кормит (кого-либо)
He should be careful not to bite the hand that feeds him.
Ему следует быть осторожным и не кусать руку, которая его кормит.
Definizioni
To act against or show ingratitude toward someone who has helped or supported you, often in a way that harms your own interests.
Parole
hand

noun
рука
bite

verb
кусать
feed

verb
кормить