‘Ali ؓ mentioned the people of an-Nahrawan. He said: Among them is a man with a defective arm, or an incomplete arm, or a small arm. If you could exercise restraint, I would have told you what Allah promised on the lips of Muhammad to those who kill them. I said: Did you hear that from him? He said: Yes, by the Lord of the Kaʿbah.
فِيهِمْ رَجُلٌ مُودَنُ الْيَدِ أَوْ مَثْدُونُ الْيَدِ أَوْ مُخْدَجُ الْيَدِ لَوْلا أَنْ تَبْطَرُوا لَنَبَّأْتُكُمْ بِمَا وَعَدَ اللهُ الَّذِينَ يَقْتُلُونَهُمْ عَلَى لِسَانِ مُحَمَّدٍ ﷺ قَالَ قُلْتُ أَأَنْتَ سَمِعْتَهُ مِنْهُ؟ قَالَ إِي وَرَبِّ الْكَعْبَةِ