Doors of Reward and Expiation of Sins is a book by Darussalam Research Division. It reveals the rewards of repentence to all Muslims. One of the basic essentials of Islam is the belief in Allah's mercy. All Muslims must seek forgiveness of Allah and abstain from committing sins. Allah Almighty is the most gracious and the most merciful, indeed Allah forgives mistakes of those who repent and ask for forgiveness. This book is of 32 pages.