He told that the Prophet was brought a vessel when he was in az-Zaura', and when he put his hand in the vessel the water began to spout between his fingers, and the people performed ablution. Qatada said he asked Anas how many were present, and he replied that there were three hundred, or, about three hundred. (Bukhari and Muslim.)
Hadith Referenceمشكوة المصابيح / كتاب الفضائل والشمائل / 5909
Hadith Gradingالألبانی:مُتَّفق عَلَيْهِ | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (3572) و مسلم (7، 6/ 2279)»