Sunan Abi Dawud, Book 1, Hadith 80 (USC-MSA)

Narrated 'Abd Allaah b. 'Umar: We (men) and women during the life-time of the Apostle of Allaah ( sal Allaahu alayhi wa sallam) used to perform ablution from one vessel. We all put our hands in it.

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ عُبَيْدِ اللَّهِ، حَدَّثَنِي نَافِعٌ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، قَالَ كُنَّا نَتَوَضَّأُ نَحْنُ وَالنِّسَاءُ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم مِنْ إِنَاءٍ وَاحِدٍ نُدْلِي فِيهِ أَيْدِيَنَا ‏.‏

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also referenced under: Hadith 80 (DarusSalam) & Hadith 80 (Hasan)