Bulugh al-Maram 1 The Book of Purification كتاب الطهارة 173

وَعَنْ عَائِشَةَ رَضِيَ اَللَّهُ عَنْهَا قَالَتْ: { كَانَ رَسُولُ اَللَّهِ – صلى الله عليه وسلم -يَأْمُرُنِي فَأَتَّزِرُ, فَيُبَاشِرُنِي وَأَنَا حَائِضٌ } مُتَّفَقٌ عَلَيْه ِ 1 . 1 – صحيح. رواه البخاري (300)، ومسلم (293)، واللفظ للبخاري.

Narrated `A’ishah (RAA): When I was menstruating, the Prophet saws would order me to wrap myself up (with an Izar, which is a dress worn below the waist) and would start fondling me. Reported by Al-Bukhari and Muslim.