diff --git a/jstests/sharding/repro-server-71626.js b/jstests/sharding/repro-server-71626.js
new file mode 100644
index 00000000000..bd4df08db29
--- /dev/null
+++ b/jstests/sharding/repro-server-71626.js
@@ -0,0 +1,37 @@
+(function() {
+'use strict';
+
+load("jstests/libs/fail_point_util.js");
+
+let st = new ShardingTest({mongos: 1, shards: 2});
+
+const dbName = "test";
+const collName = "foo";
+const ns = dbName + "." + collName;
+
+assert.commandWorked(st.s.adminCommand({enableSharding: dbName}));
+assert.commandWorked(st.s.adminCommand({movePrimary: dbName, to: st.shard0.shardName}));
+assert.commandWorked(st.s.adminCommand({shardCollection: ns, key: {x: 1}}));
+
+assert.commandWorked(st.s.adminCommand({split: "test.foo", middle: {x: 0}}));
+
+// Set failpoint on mongos.
+const failPoint = configureFailPoint(st.s, "pauseMongosSplitChunk");
+
+// On parallel shell, split.
+const awaitShell = startParallelShell(
+    () => { assert.commandWorked(db.adminCommand({split: "test.foo", middle: {x: 10}})); },
+    st.s.port);
+
+// Wait for failpoint to be hit.
+failPoint.wait();
+
+// Move the chunk to the other shard
+assert.commandWorked(st.s.adminCommand({moveChunk: ns, find: {x: 10}, to: st.shard1.shardName}));
+
+// Unset the failpoint.
+failPoint.off();
+
+awaitShell();
+st.stop();
+})();
diff --git a/src/mongo/s/commands/cluster_split_cmd.cpp b/src/mongo/s/commands/cluster_split_cmd.cpp
index 5532fac1daf..db355153a24 100644
--- a/src/mongo/s/commands/cluster_split_cmd.cpp
+++ b/src/mongo/s/commands/cluster_split_cmd.cpp
@@ -45,10 +45,13 @@
 #include "mongo/s/cluster_commands_helpers.h"
 #include "mongo/s/grid.h"
 #include "mongo/s/shard_util.h"
+#include "mongo/util/fail_point.h"
 
 namespace mongo {
 namespace {
 
+MONGO_FAIL_POINT_DEFINE(pauseMongosSplitChunk);
+
 /**
  * Asks the mongod holding this chunk to find a key that approximately divides the specified chunk
  * in two. Throws on error or if the chunk is indivisible.
@@ -134,6 +137,8 @@ public:
             Grid::get(opCtx)->catalogCache()->getShardedCollectionRoutingInfoWithRefresh(opCtx,
                                                                                          nss));
 
+        pauseMongosSplitChunk.pauseWhileSet();
+
         const BSONField<BSONObj> findField("find", BSONObj());
         const BSONField<BSONArray> boundsField("bounds", BSONArray());
         const BSONField<BSONObj> middleField("middle", BSONObj());