From him, from Ali ibn Asbat, from his uncle Ya'qub ibn Salim Al-Ahmar, from Abu Basir, from Abu Abdullah عليه السلام: Imam عليه السلام was asked about what is permissible for a husband with his menstruating wife. Imam عليه السلام said: "She should wrap herself with a waist wrap up to her knees, exposing her legs, and he is allowed whatever is above the wrap."