"During the lifetime of Messenger of Allah ﷺ men and women used to perform ablution together." (Using translation from Bukhārī 193)  

«كَانَ الرِّجَالُ وَالنِّسَاءُ يَتَوَضَّؤُونَ فِي زَمَانِ رَسُولِ اللهِ ﷺ جَمِيعًا»