Mishkat al-Masabih #506
Purification
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
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.
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About Mishkat al-Masabih
This hadith is #506 from Mishkat al-Masabih, in the Book of Purification.