Sahih Muslim 316
Sahih Muslim · Book 3: The Book of Menstruation · Description of ghusl in the case of janabah (sexual impurity)
وَحَدَّثَنَاهُ عَمْرٌو النَّاقِدُ، حَدَّثَنَا مُعَاوِيَةُ بْنُ عَمْرٍو ، حَدَّثَنَا زَائِدَةُ ، عَنْ هِشَامٍ ، قَالَ أَخْبَرَنِي عُرْوَةُ ، عَنْ عَائِشَةَ ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ إِذَا اغْتَسَلَ مِنَ الْجَنَابَةِ بَدَأَ فَغَسَلَ يَدَيْهِ قَبْلَ أَنْ يُدْخِلَ يَدَهُ فِي الإِنَاءِ ثُمَّ تَوَضَّأَ مِثْلَ وُضُوئِهِ لِلصَّلاَةِ .
'Urwa has narrated it on the authority of 'A'isha that when Allah's Messenger (ﷺ) took a bath because of sexual intercourse, he first washed his hands before dipping one of them into the basin, and then performed ablu- tion as is done for prayer.