What is the tenth commandment of God? The tenth commandment of God is: Thou shalt not covet thy neighbor's goods.
Thou shalt not covet thy neighbor's wife, nor his house. (Deuteronomy 5:21)
What does the tenth commandment forbid? The tenth commandment forbids all desire to take or to keep unjustly what belongs to others, and also forbids envy at their success.
Take heed and guard yourself from all covetousness, for a man's life does not consist in the abundance of his possessions. (Luke 12:15)
More on that -> CCC 2534-2540