Original sentence: Islam was first brought to China by an envoy sent by Uthman, the third Caliph, in 651, less than twenty years after the death of Muhammad.The envoy was led by Sa`d ibn Abī Waqqās, the maternal uncle of the Prophet himself
Edited sentence: Islam was first brought to China by an envoy sent by Uthman, the third Caliph, in 651, less than twenty years after the death of the prophet Muhammad peace be upon him.The envoy was led by Sa`d ibn Abī Waqqās, the maternal uncle of the Prophet himself peace be upon him