Authentic
graded by Al-Albani
Mishkat al-Masabih 550
Narrator:Maymūna bint al-Hārith
وَعَنْ مَيْمُونَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُصَلِّي فِي مِرْطٍ بَعْضُهُ عَلَيَّ وَبَعْضُهُ عَلَيْهِ وَأَنا حَائِض
Maimuna said, “God’s messenger used to pray in a woollen garment which was partly over him and partly over me while I was mentruat- ing.” (Bukhari and Muslim.)
Cited in Mishkat al-Masabih (No. 550).