Sunan An-Nasa'i

It was narrated from 'Aishah that Umm Habibah asked the Messenger of Allah (ﷺ) about bleeding. 'Aishah said:""I saw her wash tub filled with blood. The Messenger of Allah (ﷺ) said to her: 'Stop (praying) for as long as your period prevents you, then perform Ghusl.'"" (Another chain)