‘Ali ؓ said to the people of an-Nahrawan: Among them is a man with a defective arm - or an incomplete arm, or a deformed arm. If you could exercise restraint I would have told you what Allah promised on the lips of His Prophet ﷺ to those who kill them. ʿAbeedah said: I said to ‘Ali ؓ : Did you hear him? He said: Yes, by the Lord of the Kaʿbah; and he swore this oath three times.
عَلِيٌّ لِأَهْلِ النَّهْرِ فِيْهُمْ رَجُلٌ مَثْدُونُ الْيَدِ أَوْ مُودَنُ الْيَدِ أَوْ مُخْدَجُ الْيَدِ لَوْلا أَنْ تَبْطَرُوا لانْبَأْتُكُمْ مَا قَضَى الله عَلَى لِسَانِ نَبِيِّهِ ﷺ لِمَنْ قَتَلَهُمْ قَالَ عَبِيدَةُ فَقُلْتُ لِعَلِيٍّ أنْتَ سَمِعْتَهُ؟ قَالَ نَعَمْ وَرَبِّ الْكَعْبَةِ يَحْلِفُ عَلَيْهَا ثَلاثًا