I was talking to my Egyptian Muslim friend and he told me in Egypt an din the mosque they
don't give offering like the Christian neither do they pay tithe.
The government of the country is responsible for the salaries of the preachers in the mosque.

I doubt if the government is also responsible for the payment of the Nigeria Muslim preacher's salaries.
Do anyone know more about this? How do they get paid if the don't give offering in the Mosque or pay tithe?