"The Messenger of Allah (ﷺ) would tell one of us, if she was menstruating, to tie her Izar (waist wrap) tightly then he would fondle her."
Sunan an-Nasa'i Book 3, Hadith 25
← Previous Hadith "The Messenger of Allah (ﷺ) and I would sleep under a single blanket when I was menstruating. If anything got on him from me, he would wash that spot and no more, and pray in it, then come back. If anything got on it again from me, he would do likewise and no more, and he would pray in it."

Sunan an-Nasa'i Book 3, Hadith 24 Next Hadith → "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."

Sunan an-Nasa'i Book 3, Hadith 26