[Machine] That men and women during the time of the Prophet Muhammad ﷺ used to perform ablution together in one vessel.  

أَنَّ الرِّجَالَ وَالنِّسَاءَ فِي زَمَانِ رَسُولِ اللهِ ﷺ كَانُوا يَتَوَضَّئُونَ جَمِيعًا فِي الْإِنَاءِ الْوَاحِدِ  

We (men) and women during the life-time of the Apostle of Allaah ( sal Allaahu alayhi wa sallam) used to perform ablution from one vessel. We all put our hands in it. (Using translation from Abū Dāʾūd 80)   

كُنَّا نَتَوَضَّأُ نَحْنُ وَالنِّسَاءُ مِنْ إِنَاءٍ وَاحِدٍ عَلَى عَهْدِ رَسُولِ اللهِ ﷺ نُدْلِي فِيهِ أَيْدِيَنَا  

[Machine] My hand and the hand of the Messenger of Allah ﷺ differed regarding a single vessel for ablution. Al-Bukhari said: "This is Salim, the son of Sarj, also known as Ibn Khurboodh, Abu An-Nu'man." Some of them said: "He is the son of An-Nu'man." Al-Bukhari said: "He is the freed slave of Umm Sabiyyah, whose name was Khawlah bint Qais." Muhammad ibn Ibrahim Al-Farsi informed us: "I am Ibrahim ibn Abdullah Al-Asbahani." Abu Ahmad ibn Faris narrated from Muhammad ibn Ismail Al-Bukhari, and he mentioned it.  

اخْتَلَفَتْ يَدِي وَيَدُ رَسُولِ اللهِ ﷺ فِي إِنَاءٍ وَاحِدٍ فِي الْوُضُوءِ قَالَ الْبُخَارِيُّ سَالِمٌ هَذَا هُوَ ابْنُ سَرْجٍ وَيُقَالُ ابْنُ خُرْبُوذٍ أَبُو النُّعْمَانِ وَقَالَ بَعْضُهُمْ ابْنُ النُّعْمَانِ وَقَالَ الْبُخَارِيُّ هُوَ مَوْلَى أُمِّ صَبِيَّةَ وَاسْمُهَا خَوْلَةُ بِنْتُ قَيْسٍ أَخْبَرَنَا بِهِ مُحَمَّدُ بْنُ إِبْرَاهِيمَ الْفَارِسِيُّ أَنَا إِبْرَاهِيمُ بْنُ عَبْدِ اللهِ الْأَصْبَهَانِيُّ ثنا أَبُو أَحْمَدَ بْنُ فَارِسٍ عَنْ مُحَمَّدِ بْنِ إِسْمَاعِيلَ الْبُخَارِيِّ فَذَكَرَهُ