No Inheritance between Them
The Messenger of Allah (sal Allahu alaihi wa sallam) said: “The Muslim does not inherit from the disbeliever, nor the disbeliever from the Muslim.” [Tirmidhi]
This hadith tells us clearly that Muslims do not inherit anything from non-Muslims. It also tells us that non-Muslims cannot be given a share from the inheritance of Muslims.
Another hadith to the same effect is: “The people of two religions do not inherit from each other.” [Tirmidhi]