diff --git a/doc/data/messages/r/return-in-init/bad.py b/doc/data/messages/r/return-in-init/bad.py
new file mode 100644
index 0000000000..70fc2d0fde
--- /dev/null
+++ b/doc/data/messages/r/return-in-init/bad.py
@@ -0,0 +1,4 @@
+class Sum:
+
+    def __init__(self, a, b):  # [return-in-init]
+        return a + b
diff --git a/doc/data/messages/r/return-in-init/good.py b/doc/data/messages/r/return-in-init/good.py
new file mode 100644
index 0000000000..ef8e6e09b7
--- /dev/null
+++ b/doc/data/messages/r/return-in-init/good.py
@@ -0,0 +1,4 @@
+class Sum:
+
+    def __init__(self, a, b) -> None:
+        self.result = a + b
diff --git a/doc/data/messages/r/return-in-init/related.rst b/doc/data/messages/r/return-in-init/related.rst
new file mode 100644
index 0000000000..ad537990e0
--- /dev/null
+++ b/doc/data/messages/r/return-in-init/related.rst
@@ -0,0 +1 @@
+- `__init__ method documentation <https://docs.python.org/3/reference/datamodel.html#object.__init__>`_