Allah the Most High says, "I created not the Jinn and humans except that
they should worship me (alone)."
Any type of worship mingles with even a mustard seed amount of shirk,
all of the worship unto Allah (All kinds of Ibadah) will be destroyed
and invalidated. And whoever committed Shirk would be thrown ito the
Hell-Fire eternally. So every muslim should realize all the four
principles of Shirk are the most important matter for him to learn.