diff --git a/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php b/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
index 31564c1f56a8..5718281edee8 100644
--- a/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
+++ b/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
@@ -569,8 +569,14 @@ public function isRelation($key)
             return false;
         }
 
-        return method_exists($this, $key) ||
-               $this->relationResolver(static::class, $key);
+        if (method_exists($this, $key)) {
+            $methodReturnType = (new ReflectionMethod($this, $key))->getReturnType()?->getName();
+            if (is_subclass_of($methodReturnType, Relation::class)) {
+                return true;
+            }
+        }
+
+        return !!$this->relationResolver(static::class, $key);
     }
 
     /**
diff --git a/tests/Database/DatabaseEloquentDynamicRelationsTest.php b/tests/Database/DatabaseEloquentNoRelationsTest.php
similarity index 94%
rename from tests/Database/DatabaseEloquentDynamicRelationsTest.php
rename to tests/Database/DatabaseEloquentNoRelationsTest.php
index 346f00fa2297..e479f42ba273 100644
--- a/tests/Database/DatabaseEloquentDynamicRelationsTest.php
+++ b/tests/Database/DatabaseEloquentNoRelationsTest.php
@@ -71,6 +71,16 @@ public function testDynamicRelationsCanNotHaveTheSameNameAsNormalRelations()
         $this->assertTrue($model->isRelation('hardCodedRelation'));
     }
 
+    public function testNotDetectRegularFunctionAsRelation()
+    {
+        $model = new NoRelationModel;
+
+        if (!isset($model->comment)) {
+            $model->comment();
+        }
+        $this->assertTrue(true);
+    }
+
     public function testRelationResolvers()
     {
         $model1 = new DynamicRelationModel;
@@ -137,3 +147,9 @@ public function getResults()
         return ['many' => 'related'];
     }
 }
+
+class NoRelationModel extends Model
+{
+    public function comment(): void
+    {}
+}