"If a man beats his male or female slave with a rod and the slave dies as a direct result, he must be punished, but he is not to be punished if the slave gets up after a day or two, since the slave is his property." [Bible: Exodus 21:20-21]
Allah's Messenger (way peace be upon him) say: He who slaps his slave or beats him, the expiation for it is that he should set him free. [Sahih Muslim Book 015, Number 4078] The entire narration can be seen here:
In Islam beating or even slapping a slave is not allowed. However the Bible does not carry any punishment for a sever beating of a slave. I hope the sincere Christian will think about this the next time one of his/her co-religionists is attempting to present Islam in a negative manner.
Jesus taught people to do the Will of God (Mark 3:35) in order to become his brothers, mothers or sisters. A Muslim means one who submits to the Will of God. Do you want to become a brother of Jesus? If yes, become a Muslim. Now is the time.
Learn about Islam: