7:135
فَلَمَّا كَشَفْنَا عَنْهُمُ ٱلرِّجْزَ إِلَىٰٓ أَجَلٍ هُم بَـٰلِغُوهُ إِذَا هُمْ يَنكُثُونَ ١٣٥
Saheeh International
But when We removed the punishment from them until a term which they were to reach, then at once they broke their word.
Tafsir of "Ibn Kathir" (English)
But when We removed the punishment from them for a fixed term, which they had to reach, behold! They broke their word