The Messenger of Allah ﷺ said, "If you were not to commit sins, I would fear for you something greater than sin, self-admiration."
قال رسول الله ﷺ: لو لم تكونوا تذنبون لخشيت عليكم ما هو أكثر منه العجب.
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Bazzar (6936) narrated it from Muhammad bin Abdul-Malik Qurashi, who said, Sallam Abu Mundhir told us, from Thabit, from Anas, and he related it. Its chain is hasan because of Muhammad bin Abdul-Malik bin Abu Shawarib and Sallam bin Sulayman Abu Mundhir, for both of them make the hadith hasan. Munziri deemed its chain sound in Targheeb (4432), and Haythami followed him in this.In Bazzar's chain, Sallam Abu Mundhir is Sallam bin Sulayman Muzani. Bazzar said, "He is a well-known man, from whom Affan and the earlier scholars narrated."Bayhaqi narrated it in Shuab (6868) through the route of Abdullah bin Abdul-Wahhab, who said, Sallam bin Abu Sahba told us, from Thabit, from Anas, with the same wording. Sallam bin Abu Sahba is the Fazari Adawi, and he is daif.The majority of scholars distinguish between Sallam bin Sulayman and Sallam bin Abu Sahba, and this is the correct view, for each of them was among the companions of Thabit and narrated from him. Daraqutni mentioned both of them among the companions of Thabit Bunani in Ilal (2385), though Ibn Adi treated them as one person.The meaning of the hadith is that man is naturally disposed toward error and forgetfulness, and were this not the case, he would fall into self-admiration, which is among the gravest of sins. There is nothing in it that encourages the commission of sins and wrongdoing.