'A'isha reported:The Apostle of Allah (ﷺ) said prayer at night and I was by his side in a state of meanses and I had a sheet pulled over me a portion of which was on his side.
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَزُهَيْرُ بْنُ حَرْبٍ، قَالَ زُهَيْرٌ حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا طَلْحَةُ بْنُ يَحْيَى، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، قَالَ سَمِعْتُهُ عَنْ عَائِشَةَ، قَالَتْ كَانَ النَّبِيُّ صلى الله عليه وسلم يُصَلِّي مِنَ اللَّيْلِ وَأَنَا إِلَى جَنْبِهِ وَأَنَا حَائِضٌ وَعَلَىَّ مِرْطٌ وَعَلَيْهِ بَعْضُهُ إِلَى جَنْبِهِ .
Muslim
The Book of Prayers • Hadith 309