Q: When we say the Kalimah Laa Ilaha ILLAllah Muhammadur Rasulullah, then can we also say La Ilaha ILLAllah Muhammadun Rasulullah? With the nūn? Because in my local masjid there used to be a muezzin who used to say Ashadu Anna Muhammadun Rasulullah or Muhammadan Rasulullah, and the Imam said he was wrong and it should be said as Muhammadur Rasulullah.
A: He should be saying it as Muhammadar Rasulullah.
And Allah Ta’ala (الله تعالى) knows best.