The aim of Al-Ashbâh ve’n-Nazâir by Ibn Nujaym is neither to write all the issues of fiqh or method books, nor to write opinions that will be taken as a basis for fatwa. The most basic purpose of Al-Ashbâh ve’n-Nazâir is to reveal the rules and origins which the Hanafi school is based on and its fiqh logic which the issues are based on. It is important sign that Ibn Nujaym’s work is respected in the sect after him, is read in many regions, is accepted as the handbook of kâdi, mufti and mudarris, that more than ten commentary and annotations have been made on it. Most importantly, the fact that a new book of Al-Ashbâh was not written after Ibn Nujaym is an important indication that he achieved this goal. However, Al-Ashbâh ve’n-Nazâir received some criticisms from some later scribes and commentators. In fact, according to some later authors such as Ibn Abidin, there are many deficiencies in Al-Ashbâh ve’n-Nazâir and it is not permissible to give fatwas with it. In this study, the criticisms of al-Ashbah were examined in the center of the work called Gamzu uyun al-basâir alâ mahâsin al-Ashbah va’n-nazâir by Ebu’l-Abbâs Ahmed el-Hamawî’ye (d. 1098/1687), which is one of the most important commentaries of al-Ashbah. Although Hamawi’s method of criticism is generally in the form of presenting evidence from previous books and showing the result, it is attracting the attention that he hardened his style in some places and even described Ibn Nujaym as indecent.