A man praying in a garment, part of which is over his wife

It was narrated that Aisha said:

"The Messenger of Allahﷺused to pray at night when I was beside him and I was menstruating, and there was a garment over me, part of which was over Messenger of Allahﷺ"

أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا وَكِيعٌ، قَالَ حَدَّثَنَا طَلْحَةُ بْنُ يَحْيَى، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنْ عَائِشَةَ، قَالَتْ كَانَ رَسُولُ اللَّهِ ﷺ يُصَلِّي بِاللَّيْلِ وَأَنَا إِلَى جَنْبِهِ وَأَنَا حَائِضٌ وَعَلَىَّ مِرْطٌ بَعْضُهُ عَلَى رَسُولِ اللَّهِ ﷺ .