Sunan Ibn Majah
The Book of Purification and its Sunnah
Hadith #115
1.115
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا مَالِكُ بْنُ أَنَسٍ، حَدَّثَنِي نَافِعٌ، عَنِ ابْنِ عُمَرَ، قَالَ كَانَ الرِّجَالُ وَالنِّسَاءُ يَتَوَضَّئُونَ عَلَى عَهْدِ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ مِنْ إِنَاءٍ وَاحِدٍ .
It was narrated that Ibn 'Umar said:"Men and women used to perform ablution from a single vessel during the time of the Messenger of Allah