´It was narrated that Ibn 'Abbas said:` "My maternal aunt Maimunah told me that she and the Messenger of Allah (ﷺ) used to perform Ghusl from one vessel."
Hadith ReferenceSunan an-Nasa'i / Mention When Ghusal (A Purifying Bath) Is Obligatory And When It Is Not / Hadith: 237
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم
Hadith Takhrij«صحیح مسلم/الحیض10 (322)، سنن الترمذی/الطھارة 46 (62)، سنن ابن ماجہ/فیہ 35 (377)، (تحفة الأشراف: 18067)، مسند احمد 6/329 (صحیح)»