Hadith 426
Chapter 20: How Much Water Is Sufficient For The Junub Person To Pour On His Head - كتاب الغسل والتيمم
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا خَالِدٌ، عَنْ شُعْبَةَ، عَنْ مُخَوَّلٍ، عَنْ أَبِي جَعْفَرٍ، عَنْ جَابِرٍ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا اغْتَسَلَ أَفْرَغَ عَلَى رَأْسِهِ ثَلاَثًا .
It was narrated that Jabir said:
"When the Messenger of Allah (ﷺ) performed Ghusl, he would pour water on his head three times."
Reference : Sunan an-Nasa'i 426
In-book reference : Book 4, Hadith 31