Research and analysis of his work named Şerhu'r-Risaleti'l-Vad'iyye

Adududdin al-Îcî authored various works spanning disciplines such as grammar and theology. Understanding and correctly using words hinges upon knowing their vad'. The concept of vad', not independently treated before Îcî, was first systematically addressed by him. Prior scholars, when explaining the vad' of words like ism, pronouns, articles, and letters, often stated that their references (mevdu'uleh) were universal ('âm). Îcî, however, diverged from this view and articulated his contrary stance in his work, "er-Risaletü'l-Vad'iyye". Isâmuddin al-Isferâyînî subsequently wrote a commentary to elucidate this text. In his commentary, he extensively referenced previous interpretations, rejecting those he deemed unsatisfactory and providing reasons for his refusals. While elucidating certain textual expressions in terms of meaning and grammar, he offered multiple possibilities and occasionally expressed his preferred interpretation. This study involved a critical examination of his commentary, which was found in three different manuscript copies. Discrepancies among the manuscripts are noted in the footnotes.