in kind idiom
以实物支付，以货代款;以服务偿付
(of payment) given in the form of goods or services and not money
She wouldn't take any money but said I could pay her in kind by lending her the car. 她不肯收钱，但说我可以把汽车借给她用作为报酬。
formal以同样方法（或手段）
If you do something in kind, you do the same thing to someone that they have just done to you.