“Abu ‘Abd Allah (a.s.), has said, ‘The Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, passed by Ka‘b ibn ‘Ujrah. Lice spread from his head and he was in the state of Ihram. He (the Messenger of Allah) asked, ‘Do your bugs annoy you?’ He replied, ‘Yes, they annoy me.’ This verse of al-Quran was then revealed. ‘Those of you who become ill or find annoyance in their head expiate it by fasting or charity or an act of worship.’ (2:195) The Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, commanded him to shave his head and made the fasting to be three days, charity to six destitute people two mud (a certain measurement) for each one and one sheep as an act of worship.’ Abu ‘Abd Allah (a.s.), has said, ‘Wherever in al-Quran it is ‘or’ it is a reference to one’s having the choice to do what he likes, and wherever in al-Quran it says, ‘if one does not find then so and so’, then the first preference is one’s having the choice.’”