This hadith had been narrated on the authority of al-A'mash through another chain of transmitters also.
Sahih Muslim Book 43, Hadith 92
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We went to Abdullah b. 'Amr when Mu'dwiya came to Kufa, and he made a mention of Allah's Messenger (ﷺ) and said: He was never immoderate in his talk and he never reviled others. Allah's Messenger (ﷺ) also said: The best amongst you are those who are best in morals. Uthman said: When he came to Kufa along with Mu'awiya... (The rest of the hadith is the same).
Sahih Muslim Book 43, Hadith 91 Next Hadith → I said to Jabir b. Samura: Did you have the privilege of sitting in the company of Allah's Messenger (ﷺ)? He said: Yes, very frequently, and added: He did not stand up (and go) from the place where he offered the dawn prayer until the sun rose, and after the rising of the sun he stood up, and they (his Companions) entered into conversation with one another and they talked of the things (that they did during the Days of Ignorance), and they laughed (on their unreasonable and ridiculous acts). Allah's Messenger (ﷺ) smiled only.
Sahih Muslim Book 43, Hadith 93
Sahih Muslim Book 43, Hadith 91 Next Hadith → I said to Jabir b. Samura: Did you have the privilege of sitting in the company of Allah's Messenger (ﷺ)? He said: Yes, very frequently, and added: He did not stand up (and go) from the place where he offered the dawn prayer until the sun rose, and after the rising of the sun he stood up, and they (his Companions) entered into conversation with one another and they talked of the things (that they did during the Days of Ignorance), and they laughed (on their unreasonable and ridiculous acts). Allah's Messenger (ﷺ) smiled only.
Sahih Muslim Book 43, Hadith 93