Region: General | Usage example: He criticized the company, but he might be biting the hand that feeds him.

Bite the hand that feeds you

Meaning

Harm or disrespect someone who supports you.

Used to warn about ingratitude.

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

Literal image of attacking one’s provider.

Moral lesson found in proverbs and church sermons for centuries.