Mohammad giving primitive cleaning advice.
Why is a mundane cleaning tip elevated into a religious text with long-term authority?
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." Grade: Sahih