Ayoub bin Muhammad al-Wazan أيوب بن محمد بن زياد الوزان · The Book of Purification

"The Prophet (ﷺ) had a vessel made from a date tree in which he would urinate and place it under the bed."

"I heard 'Aishah say: 'The Messenger of Allah (ﷺ) would hand me the vessel and I would drink from it, while I was menstruating, then I would give it to him and he would look for the place where I had put my mouth and put that to his mouth.'"