A mercy for all of creation

“A mercy for all of creation” is a description that God, the Exalted, has used in referring to Prophet Muhammad (pbuh). He has not said that the Holy Prophet is a mercy for a specific group of people or a particular nation in the world. He is a mercy for everyone. He relayed the message he had received from God to human beings.
Imam Khamenei [Dec. 17, 2016]