Riyad as-Salihin 773
The Book About the Etiquette of Eating
Permissibility of Drinking Water from all Types of Clean Vessels Except Those of Gold and Silver
Anas bin Malik (May Allah be pleased with him) reported: Once the time for As-Salat (the prayer) approached. Those whose houses were near, went to their houses (to perform Wudu') while some of the people remained with the Messenger of Allah (ﷺ). A stone (containing some water) bowl was brought for him. It was too small for him to spread his hand over it. He performed his Wudu' and it (the water) sufficed for all the others also. Anas was asked: "How many of you were present there?" He said: "Eighty or more." [Al-Bukhari and Muslim]. This is Al-Bukhari's version. In Muslim's version "'that Allah's Messenger (ﷺ) called for a container of water so he was given a vessel that had some water.' Anas said 'Then I started looking at the water spouting from his fingers. Then I estimated (the persons) and they were between seventy and eighty.'"