Sunan an-Nasa'i 286
سنن النسائي#286SahihIt was narrated that 'Aishah said:"If one of us was menstruating, the Messenger of Allah (ﷺ) would tell her to put on an Izar (waist wrap) then he would fondle her
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
In-book reference: 1:287