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." Translation Not Available

Book Ref: Sunan Ibn Majah Book 1 Hadith 381
Web Ref:  Sunan Ibn Majah Vol 1 Book 1 Hadith 381