Muslim who truly worship the One and same God we worship are the ones who follow the same basic precept for us all: "Love God above all and neighbor as self".
Anyone who do not love and is not subject to the Eternal Moral Law which is higher than any limited written law that looks contradictory to any loving moral act (which is the will of God), have become idolaters of strange rules, personal interpretations, or things above the One true God who is Goodness Himself. God is Light, so He cannot be darkness. God is Love, so He cannot be hate.
So, the Muslim who worship the same God who has told us "There is no other commandment greater than to Love God above all and neighbor as self.", are truly God worshipers.
John 3:27; John 15:5; Matthew 19:26