Hadith #375 (Sahih al-Bukhari)
Book: Prayers (Salat)
Narrator(s): Abdullah ibn Shaddad
Grade: Sahih

Maimuna said, “Allah’s Messenger (ﷺ) was praying while I was in my menses, sitting beside him and sometimes his clothes would touch me during his prostration.” Maimuna added, “He prayed on a Khumra (a small mat sufficient just for the face and the hands while prostrating during prayers).

Source: https://parallelquran.com/hadith/sahih-al-bukhari-375/