A PhD thesis in linguistics entitled: (Structure of Verbs and their Effect on Meaning in Sahih Muslim) by the researcher: Hassan bin Osman bin Abker was presented on Thursday 20/2/1439 AH at the Islamic University of al-Madinah al-Munawarah.

The thesis committee was composed of Prof. Abdel Al-Fattah Muhammad Habib (Supervisor), Dr. Muhammad bin Hammad al-Qurashi (External judge from the UQU), and Dr. Nassar Muhammad Hamid Al-Din (Internal judge).

The committee recommended granting the student the PhD degree with excellence honor.