al-Sa'di's reputation as a teacher and author attracted students not only from the al-Qassim region but also from a number of other regions. He regularly received and responded to letters asking for fatawa from other countries in the Arabian Peninsula and Indian Subcontinent. One large volume of al-Sa'di's fatawa that had been given in his letters and foreign correspondences was posthumously compiled and published under the time of al-Fatawa al-Sa'diyyah. Al-Sa'di's influence and popularity during his own lifetime has been, in part, attributed to his early embrace of new technologies for spreading religious knowledge.