This classification includes material related to the recording of Hadith and biographies of reporters. - TXT: Text The original texts of all Hadith books are in Arabic، but this classification is for translated works. - USU: Usul The terminology and explanation of Mustalah writings (Science of Hadith) come into this category. - WRI: Writings All other general works on Islam that deal specifically with aspects of the Hadith and Sunnah are classified in this category. ملاحظة: - طبعت أسماء الكتب بالحرف الأسود، أمّا أسماء البحوث المنشورة في المجلات فهي بالحروف المائلة.