قَدْ كَانَ لَكُمْ آيَةٌ فِي فِئَتَيْنِ الْتَقَتَا ۖ فِئَةٌ تُقَاتِلُ فِي سَبِيلِ اللَّهِ وَأُخْرَىٰ كَافِرَةٌ يَرَوْنَهُم مِّثْلَيْهِمْ رَأْيَ الْعَيْنِ ۚ وَاللَّهُ يُؤَيِّدُ بِنَصْرِهِ مَن يَشَاءُ ۗ إِنَّ فِي ذَٰلِكَ لَعِبْرَةً لِّأُولِي الْأَبْصَارِ (13)
(3:13) You have already come across an instructive sign in the two hosts that encountered each other in battle (at Badr): one host fighting in the way of Allah, and the other that of unbelievers. They saw with their own eyes that one host was twice the number of the other. *9 But (the result of the battle has proved that) Allah succours with His victory whomsoever He wills. In this there is surely a lesson for all who have eyes to see. *10
*9). The actual disparity between the two armies was roughly three to one, but even a cursory glance was enough to tell the casual observer that the army of unbelievers was about twice as large as that of the believers.