Sunan an-Nasa'i 205
سنن النسائي#205SahihIt was narrated from 'Aishah (may Allah be pleased with her) that Umm Habibah, an in-law of the Messenger of Allah (ﷺ), who was married to 'Abdur-Rahman bin 'Awf, suffered Istihadah (non-menstrual vaginal bleeding) for seven years. She consulted the Prophet (ﷺ) about that and the Messenger of Allah (ﷺ) said:'That is not menstruation, rather that is a vein, so perform Ghusl and pray
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 1:206