The Prophet (may Allah's peace and blessings be upon him) called for water, and he was brought a wide shallow vessel with some water in it. He put his fingers in it

عن أنس بن مالك رضي الله عنه قال: حَضَرَتِ الصلاةُ فقامَ مَنْ كان قريبَ الدارِ إلى أَهْلِهِ، وبَقِيَ قَوْمٌ، فأُتِيَ رسولُ اللهِ صلى الله عليه وسلم بِمِخْضَبٍ مِنْ حِجَارَةٍ، فَصَغُرَ المِخْضَبُ أَنْ يَبْسُطَ فيهِ كَفَّهُ، فتَوَضَّأَ القومُ كلهم. قالوا: كم كنتم؟ قال: ثمانينَ وزيادةً. وفي رواية: أَنَّ النبيَّ صلى الله عليه وسلم دعا بإناءٍ من مَاءٍ، فأُتِيَ بقَدَحٍ رَحْرَاحٍ فيهِ شَيْءٌ من ماءٍ، فوضعَ أَصَابِعَهُ فيهِ، قال أنس: فَجَعَلْتُ أَنْظُرُ إلى الماءِ يَنْبُعُ مِنْ بَيْنِ أَصَابِعِهِ، فَحَزَرْتُ مَنْ تَوَضَّأَ ما بَيْنَ السبعينَ إلى الثمانينَ.

Anas ibn Mālik (may Allah be pleased with him) reported: It was time for prayer. Those who were close to their homes went to their families (to perform ablution). Some people remained. The Messenger of Allah (may Allah's peace and blessings be upon him) was brought a stone pot. It was too small for him to open his palm therein. All of the people made ablution.” They said: “How many of you were there?” He said: "Eighty and more.” Another narration reads: "The Prophet (may Allah's peace and blessings be upon him) called for water, and he was brought a wide shallow vessel with some water in it. He put his fingers in it. Anas said: "I saw water flowing from between his fingers. I then counted those who performed ablution and found them between seventy and eighty."

Source · Al-Bukhari and Muslim with multiple versions

From the Hadith Encyclopedia (hadeethenc.com).