Al Qawl al-Moufid fi Adilat at-Tawhid, de Abd al-Wahab al-Wasabi (Arabic)

"Al-Qawl al-Mufid fi Adilla al-Tawhid" is a book written by Sheikh Muhammad ibn Abd al-Wahhab Al-Wasabi, which deals with the doctrine of true Islam, starting with the belief in the Oneness of God and explaining its divisions and what contradicts it, such as greater and lesser shirk and the belief of the people of sunnah in faith, in terms of excess and deficiency, and in terms of apostasy and its divisions, and what results from Islam and necessitates eternal damnation in Hell, and what does not, and what pertains to the sunnah and innovation and their divisions, all of which is explained with evidence, designed to be concise and easy to understand and use. This book cites, referencing the Quran, all the necessary conditions for achieving Tawhid and recognizing no other deity but Allah.

القول المفيد في أدلة التوحيد، للشيخ محمد بن عبد الوهاب الوصابي

رسالة مفيدة تحتوي على ما يحتاج إليه المسلم من علم التوحيد، ويجب عليه معرفته من العقيدة الاسلامية. ذكر المؤلف فيها أركان الاسلام وأركان الإيمان و الاحسان وتوحيد الالوهية وتوحيد الربوبية وتوحيد الأسماء والصفات، ثم ذكر توحيد المتابعة وبين معنى لا إله إلا الله ومعنى رسول الله