关于伊斯兰教法原理（Usul al-Fiqh）的英文书籍有很多，但在审阅之后可以看出，大多数是为学术目的而写，而非为普通读者而作。在这方面，Abu Tariq Hilal 所著的优秀作品《Studies in Usul al-Fiqh》脱颖而出。该书以清晰、简明的风格写成，普通读者也能理解。

Various books on Usul al-Fiqh are available in English, however after reviewing them it becomes clear that most are written for academic purposes rather than for the normal reader. In this regard the excellent book written by Abu Tariq Hilal entitled „Studies in Usul al-Fiqh‟ stands out. It was written in a clear simple style understandable to the average reader.

我已将本书略作调整，使公认的法律渊源先于学者之间存在分歧的渊源加以讨论。原书中关于《古兰经》、类比（Qiyas）、创制性探求（Ijtihad）和效仿（Taqleed）的章节较为简略。我对这些章节做了补充，部分内容还进行了改写，以便加以阐述。在这个充满怀疑与怀疑论的时代，我认为有必要补充一些经文依据，并为某些定义和圣训增加所需的出处。为了将此修订版与原版区分开来，我为它另拟了一个新书名，既保留了原书的简洁风格。

I have slightly restructured the book so that the definitive sources of law are discussed before those upon which there is disagreement amongst the scholars. The chapters on the Quran, Qiyas, Ijtihad and Taqleed were brief in the original. I have added to these and in some cases rewritten sections where elaboration was required. In this age of doubt and scepticism I felt it necessary to add some textual evidences and much needed references for some definitions and Ahadith. To distinguish this amended version from the original a new title has been given that keeps to the simplicity of the original.