إِنَّ Indeed ٱلَّذِينَ those who يُبَايِعُونَكَ pledge allegiance to you إِنَّمَا only يُبَايِعُونَ they pledge allegiance ٱللَّهَ (to) Allah يَدُ (The) Hand ٱللَّهِ (of) Allah فَوْقَ (is) over أَيْدِيهِمْ ۚ their hands فَمَن Then whoever نَّكَثَ breaks (his oath) فَإِنَّمَا then only يَنكُثُ he breaks عَلَىٰ against نَفْسِهِۦ ۖ himself وَمَنْ and whoever أَوْفَىٰ fulfils بِمَا what عَـٰهَدَ he has covenanted عَلَيْهُ (with) ٱللَّهَ Allah فَسَيُؤْتِيهِ soon He will give him أَجْرًا a reward عَظِيمًۭا great ١٠
Indeed, those who pledge allegiance to you, [O Muḥammad] - they are actually pledging allegiance to Allāh. The hand of Allāh is over their hands. So he who breaks his word only breaks it to the detriment of himself. And he who fulfills that which he has promised Allāh - He will give him a great reward.
— Come To Light