﴿ فَأَعْقَبَهُمْ نِفَاقًۭا فِى قُلُوبِهِمْ إِلَىٰ يَوْمِ يَلْقَوْنَهُۥ بِمَآ أَخْلَفُوا۟ ٱللَّهَ مَا وَعَدُوهُ وَبِمَا كَانُوا۟ يَكْذِبُونَ ﴾

“whereupon He causes hypocrisy to take root in their hearts, [therein to remain] until the Day on which they shall meet Him" - because they have failed to fulfil the vow which they had made unto God, and because they were wont to lie.”

(So He hath made the consequence (to be) hypocrisy in their hearts) his end was that Allah cast hypocrisy in his heart (until the day when they shall meet Him) until the day of Judgement, (because they broke their word to Allah that they promised Him) because of breaking his promise, (and because they lied) and because he lied about what he said.