"تَحُتُّهُ, ثُمَّ تَقْرُصُهُ بِالْمَاءِ, ثُمَّ تَنْضَحُهُ, ثُمَّ تُصَلِّي فِيهِ"
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]