Sunan An-Nasa'i - سنن النسائي
4. The Book of Ghusl and Tayammum - كتاب الغسل والتيمم
9) Chapter: A Man And One Of His Wives Performing Ghusl From A Single Vessel
It was narrated that 'Aishah said:
"I remember competing over the vessel [1] with the Messenger of Allah (ﷺ), when he and I were performing Ghusl from it."
[1] See the following narration and no. 240.
9) باب اغْتِسَالِ الرَّجُلِ وَالْمَرْأَةِ مِنْ نِسَائِهِ مِنْ إِنَاءٍ وَاحِدٍ
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا عَبِيدَةُ بْنُ حُمَيْدٍ، عَنْ مَنْصُورٍ، عَنْ إِبْرَاهِيمَ، عَنِ الأَسْوَدِ، عَنْ عَائِشَةَ، قَالَتْ لَقَدْ رَأَيْتُنِي أُنَازِعُ رَسُولَ اللَّهِ صلى الله عليه وسلم الإِنَاءَ أَغْتَسِلُ أَنَا وَهُوَ مِنْهُ .