Al-Adab Al-Mufrad, Book 24, Hadith 428 (English) ⓘ

'Iyad ibn Himar reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "Allah has revealed to me that you should be humble so that none of you will oppress anyone else and none of you will disdain another.' I said, 'Messenger of Allah, what do you think I should do when a man reviles me in a low assembly and then I answer him back? Do I incur any wrong action in doing that?' He replied, 'Two men who revile one another are two shaytans who accuse one another and deny one another.'" 'Iyad said, "I was at war with the Messenger of Allah, may Allah bless him and grant him peace, and I gave him a she-camel before I became Muslim. He said, "I dislike the froth of the idolaters."

حَدَّثَنَا أَحْمَدُ، قَالَ‏:‏ حَدَّثَنَا أَبِي قَالَ‏:‏ حَدَّثَنِي إِبْرَاهِيمُ، عَنْ حَجَّاجِ بْنِ حَجَّاجٍ، عَنْ قَتَادَةَ، عَنْ يَزِيدَ بْنِ عَبْدِ اللهِ، عَنْ عِيَاضِ بْنِ حِمَارٍ قَالَ‏:‏ قَالَ رَسُولُ اللهِ صلى الله عليه وسلم‏:‏ إِنَّ اللَّهَ أَوْحَى إِلَيَّ أَنْ تَوَاضَعُوا حَتَّى لاَ يَبْغِيَ أَحَدٌ عَلَى أَحَدٍ، وَلاَ يَفْخَرَ أَحَدٌ عَلَى أَحَدٍ، فَقُلْتُ‏:‏ يَا رَسُولَ اللهِ، أَرَأَيْتَ لَوْ أَنَّ رَجُلاً سَبَّنِي فِي مَلَأٍ هُمْ أَنْقُصُ مِنِّي، فَرَدَدْتُ عَلَيْهِ، هَلْ عَلَيَّ فِي ذَلِكَ جُنَاحٌ‏؟‏ قَالَ‏:‏ الْمُسْتَبَّانِ شَيْطَانَانِ يَتَهَاتَرَانِ وَيَتَكَاذَبَانِ‏.‏ قَالَ عِيَاضٌ‏:‏ وَكُنْتُ حَرْبًا لِرَسُولِ اللهِ صلى الله عليه وسلم فَأَهْدَيْتُ إِلَيْهِ نَاقَةً، قَبْلَ أَنْ أُسْلِمَ، فَلَمْ يَقْبَلْهَا وَقَالَ‏:‏ إِنِّي أَكْرَهُ زَبْدَ الْمُشْرِكِينَ‏.‏