(Imām Bukhārī narrates) that Adam bin Abi Iyas narrated to us, he said: Ibn Abi Dhi'b narrated to us, from Az-Zuhri, from Urwah, from Hazrat Aisha (may Allāh be pleased with her), she says that
I and the Prophet ﷺ used to bathe taking water from one vessel, called "Faraq" (which held approximately eight litres of water — Al-Aini).
حَدَّثَنَا آدَمُ بْنُ أَبِي إِيَاسٍ، قَالَ حَدَّثَنَا ابْنُ أَبِي ذِئْبٍ، عَنِ الزُّهْرِيِّ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ،
قَالَتْ كُنْتُ أَغْتَسِلُ أَنَا وَالنَّبِيُّ، صلى الله عليه وسلم مِنْ إِنَاءٍ وَاحِدٍ مِنْ قَدَحٍ يُقَالُ لَهُ الْفَرَقُ.
Reference: Sahih Al Bukhari 250