And so thought Muhammad that they, as Muslims should also do the same, as Moses is a prophet for the Islamic faith. So it was declared that they should fast in the tenth day of the month of Muharram. As the Islamic faith grew, Muslims and Jews did not get along, and Muhammad decided to make Ramadan the fasting month for Muslims. Ashura was left as fasting voluntary observance. Still, Muslims followed the fasting on this day. After the death of Muhammad, a big schism happened in the Muslim community to whom should succeed Muhammad, and it originated the split between Sunni and Shi’a Muslims.