It is narrated from Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) that he said: "On the day of (the battle of) Hunayn we saw something black descending between the sky and the earth. Then it fell to the earth and crawled about like tiny ants, and it routed the polytheists."
Hadith Referenceالمعجم الأوسط / باب الميم / 7420
Hadith Takhrij«أخرجه الطبراني فى «الأوسط» برقم: 2571»