The Messenger of Allah ﷺ and Maymunah bathed together from a single vessel, a large bowl that still bore traces of dough.
أخبرنا محمد بن بشار قال حدثنا عبد الرحمن قال حدثنا إبراهيم بن نافع عن ابن أبي نجيح عن مجاهد
أن رسول الله ﷺ اغتسل هو وميمونة من إناء واحد في قصعة فيها أثر العجين
Sahih. Ibn Majah narrated it in the Book of Purification, chapter, "A man and a woman washing from a single vessel," hadith 378, from the hadith of Ibrahim bin Nafi, with the same wording, and it has a corroborating witness that will come, hadith 415, and the hadith is in Kubra, hadith 242.