Sahih al Bukhari 301
Menstrual Periods
حَدَّثَنَا قَبِيصَةُ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ مَنْصُورٍ، عَنْ إِبْرَاهِيمَ، عَنِ الأَسْوَدِ، عَنْ عَائِشَةَ، قَالَتْ كُنْتُ أَغْتَسِلُ أَنَا وَالنَّبِيُّ، صلى الله عليه وسلم مِنْ إِنَاءٍ وَاحِدٍ، كِلاَنَا جُنُبٌ. وَكَانَ يَأْمُرُنِي فَأَتَّزِرُ، فَيُبَاشِرُنِي وَأَنَا حَائِضٌ. وَكَانَ يُخْرِجُ رَأْسَهُ إِلَىَّ وَهُوَ مُعْتَكِفٌ، فَأَغْسِلُهُ وَأَنَا حَائِضٌ.
Narrated `Aisha:The Prophet (ﷺ) and I used to take a bath from a single pot while we were Junub. During the menses, he used to order me to put on an Izar (dress worn below the waist) and used to fondle me. While in I`tikaf, he used to bring his head near me and I would wash it while I used to be in my periods (menses)
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.