[Machine] Khalid sent me as a messenger of the Prophet ﷺ in a military expedition, and we encountered a group of people who were united. Ammar said, "These people have oppressed us with their unity, so I did not pay attention to Ammar's words." Ammar said, "Should I not inform the Messenger of Allah ﷺ?" When we arrived to him, I expressed my doubt to him. When he saw that the Prophet ﷺ did not support me, he turned away and his eyes were filled with tears. The Prophet ﷺ then said, "O Khalid, do not curse Ammar, for whoever curses Ammar, Allah will curse him, and whoever belittles Ammar, Allah will belittle him, and whoever ridicules Ammar, Allah will ridicule him." Khalid said, "There is nothing of my sins that I fear more than ridiculing Ammar."
خَالِدٌ بَعَثَنِي رَسُولُ اللهِ ﷺ فِي سَرِيَّةٍ فَأَصَبْنَا أَهْلَ بَيْتٍ قَدْ كَانُوا وَحَّدُوا فَقَالَ عَمَّارٌ «هَؤُلَاءِ قَدِ احْتَجَزُوا مِنَّا بِتَوْحِيدِهِمْ فَلَمْ أَلْتَفِتْ إِلَى قَوْلِ عَمَّارٍ» فَقَالَ عَمَّارٌ «أَمَا لَأُخْبِرَنَّ رَسُولَ اللهِ ﷺ فَلَمَّا قَدِمْنَا عَلَيْهِ شَكَانِي إِلَيْهِ فَلَمَّا رَأَى أَنَّ النَّبِيَّ ﷺ لَا يَنْتَصِرُ مِنِّي أَدْبَرَ وَعَيْنَاهُ تَدْمَعَانِ فَرَدَّهُ النَّبِيُّ ﷺ» ثُمَّ قَالَ يَا خَالِدُ «لَا تَسُبَّ عَمَّارًا فَإِنَّهُ مَنْ سَبَّ عَمَّارًا يَسُبَّهُ اللهُ وَمَنْ يَنْتَقِصْ عَمَّارًا يَنْتَقِصْهُ اللهُ وَمَنْ سَفَّهَ عَمَّارًا يُسَفِّهْهُ اللهُ» قَالَ خَالِدٌ «فَمَا مِنْ ذُنُوبِي شَيْءٌ أَخْوَفُ عِنْدِي مِنْ تَسْفِيهِي عَمَّارًا»