This is a common prefix among Muslims. It is not serving a calculated purpose. This is appended out of respect of the prophet they believe in. There are certain

This is a common prefix among Muslims. It is not serving a calculated purpose. This is appended out of respect of the prophet they believe in. There are certain sects which append or prepend name of some other religious figure important to them. I have been told that some people even use to (and may be still do) add name of their teachers with their names in older times out of deep respect / reverence. Names are part of identity the same way origin is. Can't just ask to purge it because everyone around has some of it in common.