"I was with the Messenger of Allah under his blanket, then I felt that I was menstruating as women do, so I slipped out from under the cover. The Messenger of Allah said: 'Are you menstruating?' I said: 'I feel that I am menstruating as women do.' He said: 'That is what Allah has decreed for the daughters of Adam.' So I slipped out and sorted myself out, then I came back, and the Messenger of Allah said to me: 'Come under the cover with me,' so I went in with him.'" (Using translation from Ibn Mājah 637)
كُنْتُ مَعَ رَسُولِ اللَّهِ ﷺ فِي لِحَافٍ فَوَجَدْتُ مَا تَجِدُ النِّسَاءُ فَقُمْتُ فَقَالَ رَسُولُ اللَّهِ ﷺ «مَا لَكِ أَنَفِسْتِ؟» قُلْتُ وَجَدْتُ مَا تَجِدُ النِّسَاءُ قَالَ «ذَاكَ مَا كَتَبَ اللَّهُ عَلَى بَنَاتِ آدَمَ» قَالَتْ فَقُمْتُ فَأَصْلَحْتُ مِنْ شَأْنِي ثُمَّ رَجَعْتُ قَالَ رَسُولُ اللَّهِ ﷺ «ادْخُلِي فِي اللِّحَافِ» فَدَخَلْتُ