Some of the major tribulations of human existence come about as a result of committing sins and spreading evil in the world. Islam recognizes that the human being is imperfect, fallible, and prone to committing sins. This is part of the human’s innately weak nature as a mortal creature, and Allah forgives all sins, if He wills. However, if we have the ability to find out what the major sins are, and we have the knowledge and the wherewithal to avoid committing them, then we are held accountable. The Book of Major Sins is a useful handbook for every Muslim who wishes to please Allah and to avoid His wrath by learning what Allah has proscribed for him or her and making every effort to keep away from major sins. Dr. Ibraheem as-Selek translated this volume into English.