This treatise was prepared by the Agency of Islamic Enlightenment in Hajj. Includes a discussion about those things which nullify a person's Islam as well as common errors made by the commonfolk.
Author: Muhammad ibn Saleh al-Othaimeen
Source: http://www.islamhouse.com/p/1377
God in Christianity... What is His Nature?: The intent of this work is to honestly and sincerely present the truth that was found
Author: Naji Ibrahim al-Arfaj
Brief guide concerning the fundamentals of Islam.
Author: Naasir Bin Abdulkarim al-Aql
Source: http://www.islamhouse.com/p/1295
This book gives a clear explanation of the Muslim sound Creed which is the core of the religion of Islam, as the belief in Tawhid (monotheism) is the purpose for which Allah created both mankind and jinn, and thus, those whoes belief in Tawhid is corrupt, are not considered Muslims.
Author: Saleh Bin Fawzaan al-Fawzaan
An interesting book contains more than eighty means of da'wah in different fields of our life such as da'wah at home, masjed, school and work in addition to various means of da'wah. These books teach us that we should not confine da'wah to masjed but it should far exceed it to include all life's fields. Based on these means of da'wah, we can direct da'wah to everyone by easy ways. We should know that da'wah is a responsibility of every Muslim, the issue which encourages us to use these means efficiently.
The Sword of Allah: Khalid bin Al-Waleed: Khalid bin Al-Waleed was one of the greatest generals in history, and one of the greatest heroes of Islam. Besides him, Genghis Khan was the only other general to remain undefeated in his entire military life. This book was written by the late Lieutenant-General A.I. Akram of the Pakistan Army, in October 1969. The author learnt Arabic in order to draw on the earliest historical sources and he visited every one of Khalid's battlefields in order to draw analyses from the viewpoint of military strategy, including reconciling conflicting historians' accounts. The book was originally published by the Army Education Press, Rawalpindi, Pakistan and printed by Feroze Sons Publishers in Lahore, Pakistan. The excellence of the book was such that it has been translated from English into Arabic and is currently sold in bookshops throughout the Arab World.
Author: A. Akram