can you define the terms muslim and non-muslim for us? this way, we won't have to get your fatwa everytime we are not sure...
"La Ilaha Ila Allah, Muhammad Rasool Allah"
There is none but Allah, and Muhammad (PBUH) is his prophet.
Allah the one who created everything.
Muhammad who preached Islam and not the one that according to Ahmedis is the one who clamied himself to be prophet after or at the state of Hazrat Muhammad (PBUH) (Naozbillah)
It need your heart and mind , so said your neyyat to be firm on this kalima and not thinking any other person for that.
non Muslim who dont believe what this Kalima says and has other self created facts. even like christians or jews or anybody else.
then comes munafiq. Those who just say themselves as Muslims and dont act from their heart like Muslims and always try to create misunderstandings in Islam, like Ahmedis and Sahis and many others. This misunderstanding starts rightly from saying the Kalima from mouth to let the world know that Ahmedi are a part of Islam but not accepting it from heart or mind.
Then comes Kafir. who say that along with Allah there is another creature / material etc (Naozbillah) through any thought.