The Prophet ﷺ and I used to take a bath from a single pot called 'Faraq'.  

كُنْتُ أَغْتَسِلُ أَنَا وَالنَّبِيُّ ﷺ مِنْ إِنَاءٍ وَاحِدٍ مِنْ قَدَحٍ يُقَالُ لَهُ الْفَرَقُ  

ʿAisha's brother and I went to ʿAisha and he asked her about the bath of the Prophet. She brought a pot containing about a Saʿ of water and took a bath and poured it over her head and at that time there was a screen between her and us.  

سَمِعْتُ أَبَا سَلَمَةَ يَقُولُ دَخَلْتُ أَنَا وَأَخُو عَائِشَةَ عَلَى عَائِشَةَ فَسَأَلَهَا أَخُوهَا عَنْ غُسْلِ النَّبِيِّ ﷺ فَدَعَتْ بِإِنَاءٍ نَحْوًا مِنْ صَاعٍ فَاغْتَسَلَتْ وَأَفَاضَتْ عَلَى رَأْسِهَا وَبَيْنَنَا وَبَيْنَهَا حِجَابٌ قَالَ أَبُو عَبْدِ اللَّهِ قَالَ يَزِيدُ بْنُ هَارُونَ وَبَهْزٌ وَالْجُدِّيُّ عَنْ شُعْبَةَ قَدْرِ صَاعٍ  

The Prophet ﷺ used to take a bath with one Saʿ up to five Mudds (1 Saʿ = [??] Mudds) of water and used to perform ablution with one Mudd of water.  

سَمِعْتُ أَنَسًا يَقُولُ كَانَ النَّبِيُّ ﷺ يَغْسِلُ أَوْ كَانَ يَغْتَسِلُ بِالصَّاعِ إِلَى خَمْسَةِ أَمْدَادٍ وَيَتَوَضَّأُ بِالْمُدِّ