(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] (ES)
Reference (ES): Bulugh al-Maram 30 (ES)
In-book reference (ES): Book 1, Hadith 35 (ES)
English translation (ES): Book 1, Hadith 34 (ES)