The Prophet ﷺ came to the mosque, meaning the mosque of al-Ahzab, placed down his cloak, stood up, and raised his hands outstretched, supplicating against them without praying. Then he came and supplicated against them and prayed.
حدثنا حسين حدثنا ابن أبي ذئب عن رجل من بني سلمة
أن النبي ﷺ أتى مسجد يعني الأحزاب فوضع رداءه وقام ورفع يديه مدا يدعو عليهم ولم يصل قال ثم جاء ودعا عليهم وصلى
No references are available.
Its chain of transmission is daif, it contains an unknown narrator, and Ahmad narrated this hadith alone.