Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.8.18+commit.87f61d96.js&optimize=false&runs=200&gist=

PayableForward.sol

// SPDX-License-Identifier: GPL-2.0
pragma solidity >=0.8.9;

contract PayableForward {
    Forwardee forwardee;

    constructor(Forwardee forwardee_) {
        forwardee = forwardee_;
    }

    function payableFunction() public payable {
        forwardee.payableForwardee{value: msg.value}(msg.value);
    }


}

contract Forwardee {
    uint public balance;

    function payableForwardee(uint msgValue) public payable {
        balance = msg.value;
        require(msg.value != 0, "Error: msg.value is empty.");
        require(balance == msg.value,"Error: balance does not equal msg.value.");
        require(msgValue == msg.value, "Error: msg.value does not equal forwarded value.");
    }
}