From him, from Muhammad ibn al-Husayn, from al-Hasan ibn Sulayman ibn Hilal, from his uncle Abdullah ibn Hilal, who said: Abu Abdillah عليه السلام, peace be upon him, said to me: “Trim your mustache and your nails every Friday, And if there is nothing to trim, then purify them (symbolically clean or file them), so that leprosy, vitiligo, and madness do not afflict you.”