diff --git a/pymongo/asynchronous/collection.py b/pymongo/asynchronous/collection.py
index 1595828260..924635d7dc 100644
--- a/pymongo/asynchronous/collection.py
+++ b/pymongo/asynchronous/collection.py
@@ -390,15 +390,6 @@ def with_options(
             read_concern or self.read_concern,
         )
 
-    def _write_concern_for_cmd(
-        self, cmd: Mapping[str, Any], session: Optional[AsyncClientSession]
-    ) -> WriteConcern:
-        raw_wc = cmd.get("writeConcern")
-        if raw_wc is not None:
-            return WriteConcern(**raw_wc)
-        else:
-            return self._write_concern_for(session)
-
     # See PYTHON-3084.
     __iter__ = None
 
diff --git a/pymongo/common.py b/pymongo/common.py
index 602db913ae..dc18b937e5 100644
--- a/pymongo/common.py
+++ b/pymongo/common.py
@@ -978,6 +978,15 @@ def _write_concern_for(self, session: Optional[_AgnosticClientSession]) -> Write
             return DEFAULT_WRITE_CONCERN
         return self.write_concern
 
+    def _write_concern_for_cmd(
+        self, cmd: Mapping[str, Any], session: Optional[_AgnosticClientSession]
+    ) -> WriteConcern:
+        raw_wc = cmd.get("writeConcern")
+        if raw_wc is not None:
+            return WriteConcern(**raw_wc)
+        else:
+            return self._write_concern_for(session)
+
     @property
     def read_preference(self) -> _ServerMode:
         """Read only access to the read preference of this instance.
diff --git a/pymongo/synchronous/collection.py b/pymongo/synchronous/collection.py
index cf8cdb7842..931001e179 100644
--- a/pymongo/synchronous/collection.py
+++ b/pymongo/synchronous/collection.py
@@ -392,15 +392,6 @@ def with_options(
             read_concern or self.read_concern,
         )
 
-    def _write_concern_for_cmd(
-        self, cmd: Mapping[str, Any], session: Optional[ClientSession]
-    ) -> WriteConcern:
-        raw_wc = cmd.get("writeConcern")
-        if raw_wc is not None:
-            return WriteConcern(**raw_wc)
-        else:
-            return self._write_concern_for(session)
-
     # See PYTHON-3084.
     __iter__ = None