Sahih Muslim 316 a
'A'isha reported:
When Allah's Messenger (ﷺ) bathed because of sexual intercourse, he first washed his hands: he then poured water with his right hand on his left hand and washed his private parts. He then performed ablution as is done for prayer'. He then took some water and put his fingers and moved them through the roots of his hair. And when he found that these had been properly mois- tened, then poured three handfuls on his head and then poured water over his body and subsequently washed his feet.
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى التَّمِيمِيُّ، حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا اغْتَسَلَ مِنَ الْجَنَابَةِ يَبْدَأُ فَيَغْسِلُ يَدَيْهِ ثُمَّ يُفْرِغُ بِيَمِينِهِ عَلَى شِمَالِهِ فَيَغْسِلُ فَرْجَهُ ثُمَّ يَتَوَضَّأُ وُضُوءَهُ لِلصَّلاَةِ ثُمَّ يَأْخُذُ الْمَاءَ فَيُدْخِلُ أَصَابِعَهُ فِي أُصُولِ الشَّعْرِ حَتَّى إِذَا رَأَى أَنْ قَدِ اسْتَبْرَأَ حَفَنَ عَلَى رَأْسِهِ ثَلاَثَ حَفَنَاتٍ ثُمَّ أَفَاضَ عَلَى سَائِرِ جَسَدِهِ ثُمَّ غَسَلَ رِجْلَيْهِ ‏.‏