Jabir b. Samura told that he heard God’s Messenger say, “There are three things I fear for my people:
seeking rain by the stars,*the injustice of the ruler, and denial of God's decree.”
Ahmad.
*This is a reference to the pre-Islamic habit of attributing rain to certain seasons and saying the rain came to them because of a certain star, whereas Muslims ought to recognize that rain comes by God’s favour.