asSalaamu Alaikum, Bulugh Al-Maram min Adillat al-Ahkam Nukhbat al-Fikar fi Mustalahi Ahl al-Athar Nukhbat al-Fikar is a work on Usool al-Hadith covers various aspects of the science of Hadith such as the chains of tranmission, narrators, Hadith classifications and more.
Ṭaḥāwī 