The Madinan Period II, Part 8: The Battle of Muʾtah and the Letters to the Kings
Section 7 of 15 · The Life of the Prophet Muhammad: The Madinan Period, Part Two
Twelve Men
And a statement of Ibn Kathīr: only twelve men were killed. Ibn Kathīr says: so according to these authorities, the total number killed should be twelve men. Then he says that two armies of opposing faiths — one consisting of those fighting for Allah's cause and numbering three thousand men, and the other of disbelievers totalling two hundred thousand, a hundred thousand Romans and a hundred thousand Christian Arabs — could battle together with the resulting deaths of only twelve Muslims is truly great; and a large number of unbelievers were killed. Khālid alone stated: nine swords were broken in my hand, and finally only a Yemeni broad sword persisted with me. How many must he have killed with those swords — not to mention all the other brave bearers of the Qur'an like him, who sentenced to death those crucifix-worshippers, upon whom be the curses of the Most Merciful, at that time and forever. This relates to the words of the Almighty:
قَدْ كَانَ لَكُمْ ءَايَةٌ فِى فِئَتَيْنِ ٱلْتَقَتَا ۖ فِئَةٌ تُقَـٰتِلُ فِى سَبِيلِ ٱللَّهِ وَأُخْرَىٰ كَافِرَةٌ يَرَوْنَهُم مِّثْلَيْهِمْ رَأْىَ ٱلْعَيْنِ ۚ وَٱللَّهُ يُؤَيِّدُ بِنَصْرِهِۦ مَن يَشَآءُ ۗ إِنَّ فِى ذَٰلِكَ لَعِبْرَةً لِّأُو۟لِى ٱلْأَبْصَـٰرِ
““There was a sign for you in the two groups who confronted each other: One group fighting in the way of Allah, and the other disbelieving, seeing themselves as twice their number, with open eyes. And Allah gives strength with His help to whomsoever He wills. Indeed, there is a lesson therein for those who have eyes.”” (3:13)
There was a sign for you in the two sides that clashed: one side fought for Allah's cause, while the other were unbelievers, whom they thought to be twice as numerous as themselves; yet Allah assists with victory whomever He pleases; there is surely a lesson in this for those who have sight — Āl ʿImrān, verse 12*. This is the end of Ghazwat Muʾtah.