I and the Messenger of Allah ﷺ used to perform the ritual bath from a single vessel while we were both in a state of major impurity.
حدثنا يحيى قال حدثنا سفيان عن منصور عن إبراهيم عن الأسود
كنت أغتسل أنا ورسول الله ﷺ من إناء واحد ونحن جنبان
Its chain of transmission is sahih. It was previously mentioned at 25245.