“Once a mother of the child of his father asked him (the Imam) (a.s.), saying, ‘I pray to Allah to keep my soul in service for your cause, I like to ask you a question but I feel shy. He (the Imam) said, ‘Ask and do not feel shy.’ She said, ‘My clothes have come in contact with blood of Hayd (menses) and I wash them, but its marks do not go away. He (the Imam) said, ‘Dye them with Mishq (a kind of dye) to mix its color and it will go away.’”