Anas bin Sirin said: The slave woman (umm walad) of Anas bin Malik had istihada (non-menstrual bleeding), so people told me to ask for a fatwa from Sayyiduna Ibn Abbas (may Allah be pleased with them). Therefore, I asked him, and he replied: When she sees a lot of blood, she should not pray, and when she feels purity, she should perform ghusl and then pray.