The book was published after the death of Gordius Semenovich Sablukov, who taught at the Missionary Anti-Moslem Department of the Kazan Spiritual Academy. He planned this book as a tool for missionary work; for the task he gathered data on the history and the doctrine of Islam. In the first part of the book, there is a review of the main sources of the Moslem doctrine: the Quran, Sunnah, the tales on the life of Mohammad, the common-day life of Arabia of his time. The second part was on the doctrine itself, and its practical application. Such plan was built by the author himself. The target auditorium was students, and the author tried to explain everything clear and in a direct way. He included original Moslem texts both in Arabic and Tartar languages. In fact, the book ‘Data on the Quran…’ is equal to the first part of his plan.
The author gave a detailed characteristic of the Quran – in its form and essence; even an unprepared reader could understand the structure and the peculiarities of the Quran. He also told about the process of shaping the canonic text, its publication in Europe and in Russia, translations of the Quran into various languages. At that, he gave necessary concepts in Russian with Arabic variants in parentheses. The history of Russian publications he started with an order of Catherine the Great, who accented the fact of Russian citizenship of Moslem population of the newly acquired Crimea and their right to keep their faith. Then, the author described the history of the Quran publications in Kazan’.
He also told about the ritual and common-day life of Moslems. He introduced such issue as correct reading of the Quran, escaping mistakes. It led him to the analysis of the language of the Quran and its difference from Arabic of later epochs, as well as comparing it with Hebrew and Syrian languages (he noted words in those languages in the Quran).
Then, the author gave an explanation of the essence of the doctrine of the Quran, various commentaries to it, as well as the interrelations between Christians and Moslems. In that context, the author found some ways to argue for renunciation from Islam in missionary discussions.
The second part of the book was a king of polemical analysis of some important points of the Moslem doctrine, first of all – about the idea of the divine revelation. He gave a number of serious philological and theological arguments against dogmas of Islam. He compared tales of the Quran with those of the Old Testament.
After it, he came to the person of Mohammed and tried to analyze his prophesies, and fortokens of his coming. The author disproved legendary history and references to the Holy Scripture of Christians as a testimony of the preference to the doctrine of Mohammad.
The book was completed with several supplements: comments on the Quran, a list of the school of reading of the Quran and others.