كتاب الوضوء
Ablutions (Wudu')
Chapter: To perform ablution from an earthen-ware pot
باب الْوُضُوءِ مِنَ التَّوْرِ
Sahih al-Bukhari 199

Narrated `Amr bin Yahya:

(on the authority of his father) My uncle used to perform ablution extravagantly and once he asked `Abdullah bin Zaid to tell him how he had seen the Prophet (ﷺ) performing ablution. He asked for an earthenware pot containing water, and poured water from it on his hands and washed them thrice, and then put his hand in the earthenware pot and rinsed his mouth and washed his nose by putting water in it and then blowing it out thrice with one handful of water; he again put his hand in the water and took a handful of water and washed his face thrice, then washed his hands up to the elbows twice, and took water with his hand, and passed it over his head from front to back and then from back to front, and then washed his feet (up to the ankles) and said, "I saw the Prophet (ﷺ) performing ablution in that way."

حَدَّثَنَا خَالِدُ بْنُ مَخْلَدٍ، قَالَ حَدَّثَنَا سُلَيْمَانُ، قَالَ حَدَّثَنِي عَمْرُو بْنُ يَحْيَى، عَنْ أَبِيهِ، قَالَ كَانَ عَمِّي يُكْثِرُ مِنَ الْوُضُوءِ، قَالَ لِعَبْدِ اللَّهِ بْنِ زَيْدٍ أَخْبِرْنِي كَيْفَ رَأَيْتَ النَّبِيَّ صلى الله عليه وسلم يَتَوَضَّأُ فَدَعَا بِتَوْرٍ مِنْ مَاءٍ، فَكَفَأَ عَلَى يَدَيْهِ فَغَسَلَهُمَا ثَلاَثَ مِرَارٍ، ثُمَّ أَدْخَلَ يَدَهُ فِي التَّوْرِ، فَمَضْمَضَ وَاسْتَنْثَرَ ثَلاَثَ مَرَّاتٍ مِنْ غَرْفَةٍ وَاحِدَةٍ، ثُمَّ أَدْخَلَ يَدَهُ فَاغْتَرَفَ بِهَا فَغَسَلَ وَجْهَهُ ثَلاَثَ مَرَّاتٍ، ثُمَّ غَسَلَ يَدَيْهِ إِلَى الْمِرْفَقَيْنِ مَرَّتَيْنِ مَرَّتَيْنِ، ثُمَّ أَخَذَ بِيَدِهِ مَاءً، فَمَسَحَ رَأْسَهُ، فَأَدْبَرَ بِيَدَيْهِ وَأَقْبَلَ ثُمَّ غَسَلَ رِجْلَيْهِ، فَقَالَ هَكَذَا رَأَيْتُ النَّبِيَّ صلى الله عليه وسلم يَتَوَضَّأُ‏.‏
Reference : Sahih al-Bukhari 199
In-book reference : Book 4, Hadith 65
USC-MSA web (English) reference : Vol. 1, Book 4, Hadith 198
  (deprecated numbering scheme)