Terms of Omar Nasafi's commentary analyze and evaluation the Surah Yâsin and as-Shaffat

In the period from the beginning of the spread of the religion of Islam to the present day, the only support that keeps Muslims together and allows them to embrace Islam tightly has been the Quran. From the very beginning, Islamic scholars have done their best to understand the will of Allah (c.c) and have created valuable works. One of these scholars is Ömer Nesefi and his valuable work in the field of tafsir. Et-Teysîr, one of the works of Ömer Nesefî, is one of the rare works with many handwritten copies. In our study, we investigated and evaluated the Surah Yâsin and Saffât. Nasafi's dominance over Quranic knowledge discipline and his rich and profound use of resources are reflected in interpretation of the Surah Yâsin and Saffât. Our study consists of introduction, four chapters and conclusion. In the introduction part, general information about the subject and purpose of the study is given. In the first chapter, general information about Et-Teysîr is given and the sources used are introduced. Then information about the methods used in the examination of the work is given. In the second part, the work has been examined in terms of the Qur'anic sciences such as Background of Ayat or Surahs and Placement of revelation. In the third chapter, the work has been examined in terms of acumen and narration interpretation and in the fourth chapter, two different copies of Et-Teysîr are compared within the framework of comparison rules. In the conclusion part, a general evaluation has been made about the work and our study. vi Keywords: Ömer Nesefî, et-Teysîr, et-Teysîr fi't-Tafsir, Quranic knowledge discipline, acumen, Narration, interpretation, Surah Yâsin, Surah Saffât, Investigation, Evaluation.