بِنَصْرِ ٱللَّهِ ۚ يَنصُرُ مَن يَشَآءُ ۖ وَهُوَ ٱلْعَزِيزُ ٱلرَّحِيمُ
Commentary:
The allusion in the words, "with the help of Allah," is to the help and succour which God vouchsafed to Muslims on the battlefield of Badr (3:124-126). On that day it was established beyond doubt that "Allah is the Mighty, the Merciful." The disbelievers, to their bitter dismay and mortification experienced the force of God’s might and the Muslims that of His mercy.