Tafsir al-Jalalayn (Arabic) is an Arabic language book that provides information on the topics of the Quran and Islam. It also contains a compilation of the teachings of the Prophet Muhammad. This book is a very important source of religious knowledge for Muslims and it is considered to be the best tafsir (interpretation) of the Quran.

It is written in the form of a dialogue and the topics are discussed in the context of a dialogue. This dialogue is between two characters, the narrator and the addressee (the audience). The book starts with the narrator telling the audience about the life of the Prophet Muhammad and how he came to be the messenger of God.