2. Ali ibn Ibrahim has narrated from his father from ibn abu ‘ Umayr from Mu‘awiyah ibn ‘ Ammar who has said the following: “I once asked abu ‘Abd Allah عليه السلام, about a man who in the state of Ihram kills a louse. He (the Imam) said, ‘There is nothing on him for it, but it is not proper to do so knowingly.’”