Hadith
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 .
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
Sahih
Sahih Muslim 1147 ·Book 4, Hadith 309·Also available on sunnah.com·