To the Madyan people, We sent Shu’aib, one of their own brothers: He said: "O my people! Worship Allah; You have no other god except Him. Surely, a clear (Sign) has come to you from your Lord! Give just (and proper) measure and weight, and do not keep away from the people the things that are their due; And do not do mischief in the land after it has been put in order: That will be best for you, if you have Faith.