"The Messenger of Allah ﷺ performed Wudu' as for prayer, but did not wash his feet, and he washed his private part and whatever had got onto it, then he poured water over himself, then he moved his feet and washed them." She said: "This is Ghusl from Janabah."
تَوَضَّأَ رَسُولُ اللَّهِ ﷺ وُضُوءَهُ لِلصَّلاَةِ غَيْرَ رِجْلَيْهِ وَغَسَلَ فَرْجَهُ وَمَا أَصَابَهُ ثُمَّ أَفَاضَ عَلَيْهِ الْمَاءَ ثُمَّ نَحَّى رِجْلَيْهِ فَغَسَلَهُمَا قَالَتْ هَذِهِ غِسْلَةٌ لِلْجَنَابَةِ
(the wife of the Prophet) Messenger of Allah ﷺ performed ablution like that for the prayer but did not wash his feet. He washed off the discharge from his private parts and then poured water over his body. He withdrew his feet from that place (the place where he took the bath) and then washed them. And that was his way of taking the bath of Janaba.
عَنْ مَيْمُونَةَ زَوْجِ النَّبِيِّ ﷺ قَالَتْ تَوَضَّأَ رَسُولُ اللَّهِ ﷺ وُضُوءَهُ لِلصَّلاَةِ غَيْرَ رِجْلَيْهِ وَغَسَلَ فَرْجَهُ وَمَا أَصَابَهُ مِنَ الأَذَى ثُمَّ أَفَاضَ عَلَيْهِ الْمَاءَ ثُمَّ نَحَّى رِجْلَيْهِ فَغَسَلَهُمَا هَذِهِ غُسْلُهُ مِنَ الْجَنَابَةِ