Ibn al-Ghazā irī 's book, titled al-Ḍ u'afā , has always been the subject of controversy in terms of its validity, influence, and its different hadithic and jurisprudential views stemmed from it. This was the motivation for the present study and, in an analytical-historical way, explaining different views about the book, and the evaluating the rate of Ibn al-Ghazā irī ’ s reliability, this question was explored that to some extent this figure was trustworthy among the Rijā l scholars since the fifth century. This research found that ibn al-Ghazā irī 's mistrusting is in conflict with the credentials given to him by the renowned scholars, and this claim that he was excessive in mistrusting the trustworthy transmitters was not confirmed. It was also revealed that Ibn al-Ghazā irī had judged the Hadith narrators by correct criteria. Research has shown that from the 5th century onwards, scholars such as Najā shī , ‘ Alā mmah Ḥ illī , and Ibn Dā wū d Ḥ illī , and later scholars such as Muhammad Tunikā bunī , Muhammad Taqi Shū shtarī , and Abdul Hā dī Faḍ lī and Khā nsā rī , have trusted Ibn al-Ghazā irī and have been influenced by his sayings.