Language:
كتاب الغسل
5  
Bathing (Ghusl)
(11)
Chapter: Pouring water with one's right hand over the left one, during the bath
(11)
باب مَنْ أَفْرَغَ بِيَمِينِهِ عَلَى شِمَالِهِ فِي الْغُسْلِ
Sahih al-Bukhari 266

Narrated Maimuna bint Al-Harith:

I placed water for the bath of Allah's Messenger (ﷺ) and put a screen. He poured water over his hands, and washed them once or twice. (The sub-narrator added that he did not remember if she had said thrice or not). Then he poured water with his right hand over his left one and washed his private parts. He rubbed his hand over the earth or the wall and washed it. He rinsed his mouth and washed his nose by putting water in it and blowing it out. He washed his face, forearms and head. He poured water over his body and then withdrew from that place and washed his feet. I presented him a piece of cloth (towel) and he pointed with his hand (that he does not want it) and did not take it.

حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، قَالَ حَدَّثَنَا أَبُو عَوَانَةَ، حَدَّثَنَا الأَعْمَشُ، عَنْ سَالِمِ بْنِ أَبِي الْجَعْدِ، عَنْ كُرَيْبٍ، مَوْلَى ابْنِ عَبَّاسٍ عَنِ ابْنِ عَبَّاسٍ، عَنْ مَيْمُونَةَ بِنْتِ الْحَارِثِ، قَالَتْ وَضَعْتُ لِرَسُولِ اللَّهِ صلى الله عليه وسلم غُسْلاً وَسَتَرْتُهُ، فَصَبَّ عَلَى يَدِهِ، فَغَسَلَهَا مَرَّةً أَوْ مَرَّتَيْنِ ـ قَالَ سُلَيْمَانُ لاَ أَدْرِي أَذَكَرَ الثَّالِثَةَ أَمْ لاَ ـ ثُمَّ أَفْرَغَ بِيَمِينِهِ عَلَى شِمَالِهِ، فَغَسَلَ فَرْجَهُ، ثُمَّ دَلَكَ يَدَهُ بِالأَرْضِ أَوْ بِالْحَائِطِ، ثُمَّ تَمَضْمَضَ وَاسْتَنْشَقَ، وَغَسَلَ وَجْهَهُ وَيَدَيْهِ، وَغَسَلَ رَأْسَهُ، ثُمَّ صَبَّ عَلَى جَسَدِهِ، ثُمَّ تَنَحَّى فَغَسَلَ قَدَمَيْهِ، فَنَاوَلْتُهُ خِرْقَةً، فَقَالَ بِيَدِهِ هَكَذَا، وَلَمْ يُرِدْهَا‏.‏
Reference : Sahih al-Bukhari 266
In-book reference : Book 5, Hadith 19
USC-MSA web (English) reference : Vol. 1, Book 5, Hadith 266
  (deprecated numbering scheme)