"Men and women used to perform ablution from a single vessel during the time of the Messenger of Allah." (Using translation from Ibn Mājah 381)
أَبِي كَانَ النِّسَاءُ وَالرِّجَالُ يَتَوَضَّئُونَ عَلَى عَهْدِ رَسُولِ اللهِ ﷺ مِنْ إِنَاءٍ وَاحِدٍ وَيُشْرِعُونَ فِيهِ جَمِيعًا