The Book of Purification
1/58. Chapter:
The (Water) Leftover From The Junub Person
Sunan an-Nasai
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنِ ابْنِ شِهَابٍ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، أَنَّهَا أَخْبَرَتْهُ أَنَّهَا، كَانَتْ تَغْتَسِلُ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي الإِنَاءِ الْوَاحِدِ .
It was narrated from 'Aishah that she used to perform Ghusl with the Messenger of Allah (ﷺ) from a single vessel.
Reference : Sunan an-Nasa'i 72In-book reference : Book 1, Hadith 72English translation : Vol. 1, Book 1, Hadith 72