All Praise is due to Allaah, we praise Him, we seek His aid, and we seek His forgiveness. We seek refuge in Allaah from the evils of our souls and from the evils of our actions. Whomsoever Allaah guides, then there is no one to misguide him, and whomsoever Allaah leaves to go astray, then there is no one to guide him. I bear witness that none has the right to be worshipped except Allaah, alone without partners, and that Muhammad is His slave and messenger. «O you who believe! Fear Allaah as He should be feared and die not except in a state of Islam (as Muslims) with complete submission to Allaah» Surah Aali-Imran (3:102)
«O mankind! Be dutiful to your Lord, Who created you from a single person (Adam), and from him (Adam) He created his wife [Hawwa (Eve)], and from them both He created many men and women and fear Allaah through Whom you demand your mutual (rights), and (do not cut the relations of) the wombs (kinship). Surely, Allaah is Ever an All-Watcher over you» Surah an-Nisa (4:1).
«O you who believe! Keep your duty to Allaah and fear Him, and speak (always) the truth. He will direct you to do righteous good deeds and will forgive you your sins. And whosoever obeys Allaah and His Messenger (sallallaahu ‘alayhi wa sallam) he has indeed achieved a great achievement (i.e. he will be saved from the Hell-fire and made to enter Paradise).» Surah al-Ahzab (33:70-71).
To proceed: Indeed, the most truthful speech is the speech of Allaah (ta’ala), and the best of guidance is the guidance of Muhammad (sallallaahu ‘alayhi wa sallam). The worst of affairs are the newly invented matters, and every newly invented matter is an innovation. Every innovation is a misguidance, and every misguidance is in Hellfire.
It proceeds that this book entitled, al-Qawaa'id wal-Usool al-Jaami'ah wal-Furooqwat -Taqaaseem al-Badee'ah an-Naafi'ah, (The Basic Rulings and Principles of Fiqh – The Beneficial, Eloquent Classifications and Differentiations) was written by one of the greatest scholars of Islam, ash-Shaykh, al-Allamah ‘Abd ar-ahman ibn Naasir as-Sa’di (rahimahullaah). The importance of this book stems from the nature of its content; this is because the scholars of Islam gave great importance to the study of the basic rulings and principles of fiqh so that they are able to encompass the masaa’il (various cases) and refer these cases to the basic rulings and principles in order to deduct and apply the judgment in a comprehensive, yet precise manner. In addition, the ‘ulama (scholars) of Islam paid great attention to the matters that seem to be similar in nature but have different rulings. This book covers the principles and basic foundations regarding the rulings as well as the classification and differentiation between cases.
This Book is: Al-Qawaa'id wal-Usool al-Jaami'ah wal-Furooq wat -Taqaaseem al-Badee'ah an-Naafi'ah.
The Basic Rulings and Principles of Fiqh –The Beneficial, Eloquent Classifications and Differentiations.
By Shaikh 'Abdur Rahmaan ibn Naasir As-Sa'di (d. 1376 A.H./1956 C.E.). Prepared by Saleh As-Saleh.
Transcription of the lectures from www.understand-islam.net