(3) باب إزالة النجاسة وبيانها
Narrated 'Asma bint Abu Bakr (rad):
The Prophet (Saw) said regarding menstruation blood that smears a garment, "She should scrape it, rub it with water, then wash it and then she may pray in it". [Agreed upon] (ID)
Reference (ID): Bulugh al-Maram 30 (ID)
In-book reference (ID): Book 1, Hadith 35 (ID)
English translation (ID): Book 1, Hadith 34 (ID)