reward for obedience

وَتَرَكْنَا عَلَيْهِ فِى ٱلْـَٔاخِرِينَ

And We left for him [favorable mention] among later generations:

يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِن تَنصُرُوا۟ ٱللَّهَ يَنصُرْكُمْ وَيُثَبِّتْ أَقْدَامَكُمْ

O you who have believed, if you support Allāh, He will support you and plant firmly your feet.