﴿ وَمَا يَفْعَلُوا۟ مِنْ خَيْرٍۢ فَلَن يُكْفَرُوهُ ۗ وَٱللَّهُ عَلِيمٌۢ بِٱلْمُتَّقِينَ ﴾

“And whatever good they do, they shall never be denied the reward thereof: for, God has full knowledge of those who are conscious of Him.”

(And whatever good) that was mentioned above; and it is also said: whatever act of excellence they perform towards Muhammad and his Companions (they do) i.e. 'Abdullah Ibn Salam and his followers, (they will not be denied the meed thereof) its reward will not be forgotten and they shall indeed be rewarded for it. (Allah is Aware of those who ward off (evil)) ward off disbelief, idolatry and indecency-the reference here being to 'Abdullah Ibn Salam and his followers.