anyone who doubts the finality of the prophethood resting with Rasulullah (saws) is not a muslim. it is very surprising that you are so accepting of a qadiani as being a muslim. i can only conclude that being a maliki you are an african, and have had the good fortune of not being exposed to qadianism, otherwise if you were indian and thus exposed to them you would not have that particular stance. brelwis and deobandies have all issued fatwas many decades ago (century) declaring them all to be kafir.