(82) باب فِي الْمُسْتَحَاضَةِ تَعْتَكِفُ
A'ishah(may Allaah be pleased with her) said "One of the wives of the Apostle of Allaah(ﷺ) observed I'tikaf along with him (in the mosque). She would see yellowness and redness. Sometimes we would place a washbasin while she prayed."
Reference: Sunan Abi Dawud 2476
In-book reference: Book 14, Hadith 164
English translation: Book 13, Hadith 2470