"While I was lying down with the Messenger of Allah ﷺ under a blanket, my period came, so I slipped away and put on the clothes I used to wear when I was menstruating. The Messenger of Allah ﷺ said: 'Are you menstruating?' I said: 'Yes.' Then he called me and I lied down with him under the blanket."
بَيْنَمَا أَنَا مُضْطَجِعَةٌ مَعَ رَسُولِ اللَّهِ ﷺ فِي الْخَمِيلَةِ إِذْ حِضْتُ فَانْسَلَلْتُ فَأَخَذْتُ ثِيَابَ حَيْضَتِي فَقَالَ رَسُولُ اللَّهِ ﷺ أَنَفِسْتِ قُلْتُ نَعَمْ فَدَعَانِي فَاضْطَجَعْتُ مَعَهُ فِي الْخَمِيلَةِ