Sahih al-Bukhari 1256
Sahih al-Bukhari · Book 23: Funerals (Al-Janaa'iz) · (To start with) the parts of the dead body which are washed in ablution
Narrated Um 'Atiyya:
حَدَّثَنَا يَحْيَى بْنُ مُوسَى ، حَدَّثَنَا وَكِيعٌ ، عَنْ سُفْيَانَ ، عَنْ خَالِدٍ الْحَذَّاءِ ، عَنْ حَفْصَةَ بِنْتِ سِيرِينَ ، عَنْ أُمِّ عَطِيَّةَ ـ رضى الله عنها ـ قَالَتْ لَمَّا غَسَّلْنَا بِنْتَ النَّبِيِّ صلى الله عليه وسلم قَالَ لَنَا وَنَحْنُ نَغْسِلُهَا " ابْدَأْنَ بِمَيَامِنِهَا وَمَوَاضِعِ الْوُضُوءِ " .
When we washed the deceased daughter of the Prophet, he said to us, while we were washing her, "Start the bath from the right side and from the parts which are washed in ablution."