The suggestion in explaining the terminology and what was added to it from the hadiths that are counted from the Sahih books, a book on the science of hadith written by Taqi al-Din Ibn Daqiq al-Eid, in which he collected the terminology of the hadith and the levels of narration and the narrators in short and concise. Its author intended it to be an introduction to the expansion of this art and he arranged it into sections. .