"Sheikh Al -Islam Ibn Taymiyyah spoke in this letter about Fadl Abu Bakr Al -Siddiq and Ali, may God be pleased with them, and its summary as follows: There is a difference between" characteristics "in which the other did not participate, the conclusion of Abu Bakr if the Prophet, may God bless him Khalil, as well as his command, may God bless him and grant him peace, greeted Abu Bakr to pray for people for the duration of his illness, from his characteristics in which no one has involved.