Anas ibn Malik reported: I saw the Messenger of Allah, peace and blessings be upon him, during the afternoon prayer and the people were asking for water to perform ablution but they could not find it. Some water was brought to the Messenger of Allah and he placed his hand in the vessel and ordered people to perform ablution. I saw water sprouting from his fingers and the people performed ablution until even the last person could do it.

Source: Sahih Bukhari 167, Sahih Muslim 2279

Grade: Muttafaqun Alayhi (authenticity agreed upon) according to Al-Bukhari and Muslim

عَنْ أَنَسِ بْنِ مَالِكٍ أَنَّهُ قَالَ رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَحَانَتْ صَلَاةُ الْعَصْرِ فَالْتَمَسَ النَّاسُ الْوَضُوءَ فَلَمْ يَجِدُوهُ فَأُتِيَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِوَضُوءٍ فَوَضَعَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي ذَلِكَ الْإِنَاءِ يَدَهُ وَأَمَرَ النَّاسَ أَنْ يَتَوَضَّئُوا مِنْهُ قَالَ فَرَأَيْتُ الْمَاءَ يَنْبُعُ مِنْ تَحْتِ أَصَابِعِهِ حَتَّى تَوَضَّئُوا مِنْ عِنْدِ آخِرِهِمْ

167 صحيح البخاري كتاب الوضوء باب التماس الوضوء إذا حانت الصلاة

2279 صحيح مسلم كتاب الفضائل باب في معجزات النبي صلى الله عليه وسلم