Like any religion, Islam has a set of rules and guidance that worshippers must follow. These rules are usually categorised as 'Islamic law' and come from the holy Qu'ran which Muslims believe to be the literal word of God.
The Qu'ran is treated with great reverence and care and many try their best to follow the teachings of the Qu'ran that they believe were passed down to mankind by the Prophet Muhammad. Part of those Islamic laws are what is permissible and what is forbidden for a Muslim.
This is commonly phrased as what is halal (permitted) and haram (forbidden).
