A discussion of the 'pillars' of Eemaan and the factors which invalidate ISlam and remove a person from its fold.
Author: Abdul Aziz bin Abdullah bin Baz
Source: http://www.islamhouse.com/p/1227
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This book is one of the most important Islamic books which gives right answers about Christianity.
Author: Sheikh-ul-Islam ibn Taymiyyah
Source: http://www.islamhouse.com/p/93497
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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
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Rulings on Zakaat al-Fitr.
Author: Muhammad Salih Al-Munajjid
Publisher: http://www.islamqa.com - Islam : Question & Answer Website
Source: http://www.islamhouse.com/p/1339
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A wonderful booklet mentions the predictions about the Prophet Muhammed (Peace be upon him) in Psalm, Old Testament and New Testament. It also discusses some other issues.
Publisher: http://www.rasoulallah.net - Website of Rasoulullah (peace be upon him)
Source: http://www.islamhouse.com/p/321055
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The Muslim Creed - 'Commentary on the Creed of Aqeedah At-Tahaawiyyah.
Author: Abu Jafar at-Tahawi
Source: http://www.islamhouse.com/p/193219
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