What is the Jarh (disparagement) and Ta'deel (authentication) of the narrator Hisham bin Hujair, and what is the final stance of each of the great scholars of Jarh and Ta'deel concerning him, and what is the reason for the scholars' categorization of him, and how does the average Muslim deal with such issues?

This answer addresses the disagreement regarding the status of the narrator Hisham ibn Hujair, which is one of the intricate issues in Hadith (definition) science that laypeople should not delve into. Hisham ibn Hujair is considered a jurist from Makkah, and scholars have differed concerning him: most Hadith scholars, such as Ahmad and Yahya ibn Ma'in, deemed him weak, while others, like Ibn Sa'd and Al-Ijli, considered him reliable. Al-Dhahabi and Ibn Hajar, however, favored the opinion that his Hadith is hasan (definition) (good), unless he contradicts others or narrates uniquely. Al-Bukhari and Muslim narrated Hadiths from him that were corroborated by others, and Sufyan ibn Uyaynah would only take from him what he could not find from anyone else. Passing judgment on him is a matter of ijtihad (definition) (independent reasoning) in which disagreement is permissible. Whoever accepts his Hadith has a precedent, and whoever deems him weak also has a precedent. General Muslims are advised to refer to scholars regarding these intricate matters.