Al-Usool-uth-Thalaathah (The Three Fundamental Principles) is one of the famous works of al Imaam Muhammad bin ‘Abdil-Wahhaab (may Allah have mercy on him). Without doubt The three fundamental principles of islam are amongst the most important matters that every person will be asked about; ‘Who is your Lord?’, ‘What is your religion?’ and ‘Who is your Prophet?’. So its obligatory upon mankind to know its proofs and making it a study until we reach our next abode, the Grave.
The manner of this document would be mostly in short points which are easy to understand and will be published chapter by chapter on BLOG Insha Allah.
The Risalat of Sheikhul Islam consists of five parts. There are three introductions, a main text, and an ending.
The three introductions:
“اعلم رحمك الله أنه يجب علينا تعلم أربع مسائل”
Meaning: “Know – May Allah have mercy on you – that it is Wajib upon us to learn four matters……”
“اعلم رحمك الله أنه يجب على كل مسلم ومسلمة تعلم هذه المسائل الثلاث والعمل بهن”
Meaning: “Know – May Allah have mercy on you – that it is Wajib upon every Muslim man and woman to learn the following three matters and act upon them…….”
“اعلم أرشدك الله لطاعته أن الحنيفية ملة إبراهيم أن تعبد الله وحده مخلصا له الدين”
Meaning: “Know – May Allah guide you to His obedience – that al-Haneefiyya Millat Ibrahim is to worship Allah alone, making the worship sincere to him.……”
Shaykh Saalih al Fawzaan said in his explanation of the book:
So before us is this treatise – the treatise “The Three Fundamental Principles” – and it is a tremendous treatise which is brief, supported by evidences from the Book of Allaah and the Sunnah of his Messenger sall Allaahu ‘alaihi wa sallam.
And this small treatise is about a tremendous fundamental matter from the fundamentals of Islaam, and it is ‘aqeedah – creed and belief. And the scholars give importance to these brief works, authoring them and exerting themselves in keeping them brief and refining them; then they would encourage their students to memorise them so that they should remain fundamental assets for them and a store of provision for them from which they can derive benefit, and through which they bring benefit to others.
And beginning with these shorter works is the foundation for the students of knowledge, so the student of knowledge should begin by learning little by little, taking from the initial points of knowledge and its fundamentals and then proceeding in stages through it.
The main text is the Usul al Thalatha which starts with “فإذا قيل لك مالأصول الثلاثة” Meaning: “If it is said to you ‘what is the Usul al Thalatha (three matters)……’” And these three matters are Maurifat  of the Rabb, His Religion and His Prophet Muhammad sallallahu alayhi wasallam.
And the ending is about resurrection, Kufr bil-taghut, the heads of the Tawaghit 
 Literal translation of Maurifat is awareness
 Tawaghit: Plural of Taghut
Audio in Urdu: Dr. Farhat Hashmi – Al-Usul al-Thalathah