PhD Degree Awarded to Mr. Yahia Mohammed Hushaidan in Syntax and Morphology

Mr. Yahia Mohammed Ahmed Hushaidan was awarded a PhD degreein Arabic Syntax and Morphology for his dissertation titled “Grammatical Thought between Sibawayh and Al-Mubarred: A Historical Study of Issues and Foundations,”which was submitted tothe Department of Arabic Language, Faculty of Languages – Sana’a University. The PhDdissertation defense was held on Monday, Dhu al-Hijjah6, 1446Hijri, corresponding to June 2, 2025.

The PhDViva-Voce Committee, which was formed based on a resolution issued by the Graduate Studies and Scientific Research Council, consisted of the following:

#	Committee Members	Designation	University	Position
1	Prof. AbdulkarimMusleh Ahmed Al-Bahlah	External Examiner	Thamar University	Chair
2	Prof. Abdullah Ahmed Hamzah Al-Nehari	Main Supervisor	Sana’a University	Member
3	Assoc. Prof. Khaled Abdulhalim Hashem Al-Absi	Internal Examiner	Sana’a University	Member

The dissertation aimed to explore the grammatical thought of Sibawayh and Al-Mubarrad, highlighting methodological distinctions, points of divergence, and the developmental trajectory between their approaches. It further sought to uncover the underlying factors contributing to these developments and to illuminate Al-Mubarrad’s contributions to the field of Arabic grammar.

The study yielded several significant findings regarding the evolution of grammatical thought in the work of Al-Mubarrad. These include:

There was a transformation of grammatical reasoning, marked by a shift from an emphasis on the intrinsic nature of language toward a framework grounded in logic, rationalism, and philosophy.
There was an increased focus on grammatical reasoning. It gained prominence to the extent that it paralleled the attention afforded to grammatical rules themselves.
The concept of the grammatical agent (amil‎) developed and expanded.It became increasingly central to syntactic analysis, with grammatical judgments progressively constructed on its basis.
There was a significant intensification of grammatical disputes, which reached their peak in the works of Al-Mubarrad.

The researcher presented several recommendations in his dissertation, including the need to conduct further research on the grammatical contributions of grammarians situated between Sibawayh and Al-Mubarrad as well as their contributions to the study of meaning.

The dissertation defense was attended by a number of academics, researchers, students, interested participants, and the researcher’s colleagues.