(9) CHAPTER. Washing out the menstrual blood.
Narrated Asma’ bint Abi Bakr : A woman asked Allah’s Messenger, peace be upon him, “O Allah’s Messenger! What should we do if the blood of menses falls on our clothes?” Allah’s Messenger, peace be upon him, replied, “If the blood of menses falls on the garment of anyone of you, she must take hold of the blood spot, rub it, and wash it with water and then offer Salat (prayers) in (with) it.”