Mishkat al-Masabih 3 Purification كتاب الطهارة 243

وَعَنْهَا قَالَتْ: كُنْتُ أَشْرَبُ وَأَنَا حَائِضٌ ثُمَّ أُنَاوِلُهُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَيَضَعُ فَاهُ عَلَى مَوْضِعٍ فِيَّ فَيَشْرَبُ وَأَتَعَرَّقُ الْعَرْقَ وَأَنَا حَائِضٌ ثُمَّ أُنَاوِلُهُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسلم فَيَضَع فَاه على مَوضِع فِي. رَوَاهُ مُسلم

She also said, “I would drink when I was menstruating, then hand it to the Prophet, and he would put his mouth where mine had been and drink; and I would eat flesh from a bone when I was menstruating, then hand it to the Prophet, and he would put his mouth where mine had been.” Muslim transmitted it.