It is narrated from Sayyiduna Abdullah bin Abi Awfa (may Allah be pleased with him) that he said: The Messenger of Allah (peace and blessings be upon him) made a sudden early-morning attack on the people of Khaybar while they were going out early in the morning (for their work) and were looking on, and they cried out: "Muhammad (peace and blessings be upon him) and the army! Muhammad (peace and blessings be upon him) and the army!" The Prophet (peace and blessings be upon him) said: "When we descend upon the courtyard of a people, then evil is the morning of those who were warned."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Mis'ar (may Allah have mercy on him) except Abdullah bin Muhammad bin al-Mughirah."
Hadith Referenceالمعجم الأوسط / باب العين / 3820
Hadith Takhrij«أخرجه الطبراني فى «الصغير» برقم: 538»