The Book of Purification and its Sunnah
1/36. Chapter:
A man and woman performing ablution from a single vessel
Sunan Ibn Majah
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."
Reference : Sunan Ibn Majah 381In-book reference : Book 1, Hadith 115English translation : Vol. 1, Book 1, Hadith 381