عقيد التوحيد وبيان مايضادها ينقصها من الشرك الأكبر والأصغر والتعطيل والبدع وغير ذلك
This is a Amazing book written by ash-Shaykh Saalih bin Fawzaan bin Abdullaah al-Fawzaan that explains what exactly is at-Tawheed (Singling Out Allaah in worship) and that which opposes it from Shirk (Associating partners with Allaah ta'alaa), The Major and Minor Shirk, at-Tateel (Negation of The Attributes of Allaah), Bid'ah (Innovation) and other than that.  Printed in KSA by Adr al-'Aasimah on Yellow paper. 264 pages