Notes on this Book
The present book is intended both for readers who adhere to Islam and for followers of other religions who seek to learn more about Islam and its core message, or about the early understanding of monotheism in general.
To facilitate comprehension, Arabic technical terms are explained through annotations whenever they are mentioned for the first time if possible. In order to enhance readability for the English-speaking reader, such Arabic technical terms are consistently written in lowercase and italicized in this book. Certain exceptions to this rule are noted in the guidelines at the end of the book.
To facilitate the reader's comparison with the original texts, these have always been presented before their respective English translations. Throughout the entire book, the texts cited have been taken from the respective editions of the digital library al-Maktabatu sh-shamilah to facilitate reference. It should be noted that the editions of al-Maktabatu sh-shamilah have frequently been revised (e.g., through the complete vocalization of texts).