God created the creatures and commanded them to obey and worship Him, and so that people would not follow their whims and desires, He sent down books, enacted laws, and sent messengers; To explain to people the divine approach that God has accepted for His servants, and the Islamic Sharia is the most complete and greatest of the laws; There is nothing that matters to people in their life and death except that I have made it clear and set its limits and controls. God has disciplined His servants in His Noble Book and on the tongue of His Prophet?, He did not leave them to their whims and flounder in a random mess, but rather made clear to them what would reform them and refine their morals.This is the book “Adab fi al-Din” by the great scholar, Hajjaj al-Islam Abu Hamid al-Ghazali. He wrote it in a short, simplified style. He tried to clarify these etiquettes and list them in small chapters, each of which contains literature from the etiquette of the believer towards his Lord, his religion, his prophet, or His fellow believers or his community. It is a comprehensive brief book of all Islamic manners that a Muslim must have in his life.