It was narrated from Asma' bint Abi Bakr that a woman asked the Messenger of Allah (ﷺ) about menstrual blood that gets on clothes. He said: Scratch it, then rub it with water, then sprinkle water over it, and pray in it.
It was narrated that 'Adi bin Dinar said: I heard Umm Qais bint Mihsan say that she asked the Messenger of Allah (ﷺ) about menstrual blood that gets on one's clothes. He said: 'Scratch it with a stick and wash it with water and lotus leaves.'