you scratch my back and I’ll scratch yours

idiomPart ofback

you scratch my back and I’ll scratch yours — idiom

1. If you help me, I will help you in return, often implying mutual benefit.

1.idiom
Definition

If you help me, I will help you in return, often implying mutual benefit.

Example

In politics, it's often you scratch my back and I'll scratch yours.

They made a deal: you scratch my back and I'll scratch yours.