I want to pass one out of two or two of them will be passed. But if none of them are filed then nothing will be happened to give me errors.

$validator = Validator::make($request->all(), [
            'mobile_number' => 'required_without:phone_number|nullable',
            'phone_number' => 'required_without:mobile_number|nullable',
        ]);
        if ($validator->fails()) {
            return redirect()->back()->with('error', $validator->errors()->first());
        }