وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ زَيْنَبَ بِنْتِ أَبِي سَلَمَةَ، أَنَّهَا رَأَتْ زَيْنَبَ بِنْتَ جَحْشٍ الَّتِي كَانَتْ تَحْتَ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ وَكَانَتْ تُسْتَحَاضُ فَكَانَتْ تَغْتَسِلُ وَتُصَلِّي ‏.‏

Yahya related to me from Malik from Hisham ibn Urwa from hisfather from Zaynab bint Abu Salama that she saw Zaynab bint Jahsh, thewife of Abd ar-Rahman ibn Awf, and she used to bleed as ifmenstruating. She would do ghusl and pray. Translation Not Available

Book Ref: Muwatta Imam Malik Book 2 Hadith 137
Web Ref:  Muwatta Imam Malik Book 2 Hadith 108