Sunan an-Nasa'i 203
سنن النسائي#203SahihIt was narrated that 'Aishah said:"Umm Habibah bint Jahsh suffered Istihadah (non-menstrual vaginal bleeding) for seven years. She complained about that to the Messenger of Allah (ﷺ) and the Messenger of Allah (ﷺ) said: 'That is not menstruation; rather that is (bleeding from) a vein, so perform Ghusl then 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 - Agreed Upon
In-book reference: 1:204