Original sentence: Ali was sent to Yemen a year later to spread the teachings of Islam.During the Conquest of Mecca in 630, Muhammad requested from Ali to guarantee that the conquest would be bloodless.Muhammad trusted Ali enough to carry the messages and declare the orders
Edited sentence: Ali was sent to Yemen one year later to spread the teachings of Islam.Ali was so reliable and trustworthy that Muhammad asked him to carry the messages and declare the orders.During the Conquest of Mecca in 630, Muhammad asked Ali to guarantee that the conquest would be bloodless