كتاب الحيض
3  
The Book of Menstruation
(13)
Chapter: It is recommended for the woman who is performing ghusl following menses to apply a piece of cloth scented with musk to the site of the bleeding
(13)
باب اسْتِحْبَابِ اسْتِعْمَالِ الْمُغْتَسِلَةِ مِنَ الْحَيْضِ فِرْصَةً مِنْ مِسْكٍ فِي مَوْضِعِ الدَّمِ ‏
Sahih Muslim 332 e

'A'isha reported:

Asma' b. Shakal came to the Messenger of Allah (ﷺ) and said: Messenger of Allah, how one amongst us should take a bath after the menstruation, and the rest of the hadith is the same and there is no mention of bathing because of sexual intercourse.
وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى، وَأَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ كِلاَهُمَا عَنْ أَبِي الأَحْوَصِ، عَنْ إِبْرَاهِيمَ بْنِ مُهَاجِرٍ، عَنْ صَفِيَّةَ بِنْتِ شَيْبَةَ، عَنْ عَائِشَةَ، قَالَتْ دَخَلَتْ أَسْمَاءُ بِنْتُ شَكَلٍ عَلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَتْ يَا رَسُولَ اللَّهِ كَيْفَ تَغْتَسِلُ إِحْدَانَا إِذَا طَهُرَتْ مِنَ الْحَيْضِ وَسَاقَ الْحَدِيثَ وَلَمْ يَذْكُرْ فِيهِ غُسْلَ الْجَنَابَةِ ‏.‏
Reference : Sahih Muslim 332e
In-book reference : Book 3, Hadith 74
USC-MSA web (English) reference : Book 3, Hadith 651
  (deprecated numbering scheme)