It is narrated from Sayyiduna Qais (may Allah be pleased with him) that Sayyiduna Amr bin Al-Aas (may Allah be pleased with him) was passing by with some of his companions when they came across a dead mule, which had swollen due to being dead for a long time. He said: "By Allah, for any of you to eat this until he fills his stomach is better than eating the flesh of a Muslim."
Hadith Referenceالادب المفرد / كتاب / 736
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه ابن أبى شيبة : 25537 و وكيع فى الزهد : 433 و ابن أبى الدنيا فى ذم الغيبه : 39 و هناد فى الزهد : 563/2»
Explanation & Benefits
Shaykh Maulana Usman Muneeb
Benefits and Issues: The point is that just as you would not like to go near its flesh, in the same way you should also detest the backbiting of a Muslim, because human flesh is even more detestable than that.
Source: Fadlullah al-Ahad: Urdu Commentary on al-Adab al-Mufrad, Page: 736