أَنَّ امْرَأَةً، سَأَلَتِ النَّبِيَّ صلى الله عليه وسلم عَنْ غُسْلِهَا مِنَ الْمَحِيضِ، فَأَمَرَهَا كَيْفَ تَغْتَسِلُ قَالَ " خُذِي فِرْصَةً مِنْ مِسْكٍ فَتَطَهَّرِي بِهَا ". قَالَتْ كَيْفَ أَتَطَهَّرُ قَالَ " تَطَهَّرِي بِهَا ". قَالَتْ كَيْفَ قَالَ " سُبْحَانَ اللَّهِ تَطَهَّرِي ". فَاجْتَبَذْتُهَا إِلَىَّ فَقُلْتُ تَتَبَّعِي بِهَا أَثَرَ الدَّمِ.
Aishah reported that a woman asked the Prophet ﷺ about her ritual bath (ghusl) after menstruation, and he told her how to take the ritual bath. He said, “Take a piece of wool with musk and purify yourself with it.” She said, “How shall I …
also in Sahih al-Bukhari 315