Umm 'Atiyya reported that the Messenger of Allah ﷺ said to them (the women) in regard to the washing of his daughter to start from the right side and with those parts of the body over which Wudu' is performed.
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لَهُنَّ فِي غَسْلِ ابْنَتِهِ ابْدَأْنَ بِمَيَامِنِهَا وَمَوَاضِعِ الْوُضُوءِ مِنْهَا