فَلَمَّا كَشَفۡنَا عَنۡهُمُ ٱلرِّجۡزَ إِلَىٰٓ أَجَلٍ هُم بَٰلِغُوهُ إِذَا هُمۡ يَنكُثُونَ ١٣٥
But when We removed the punishment from them until a term which they were to reach,1 then at once they broke their word.
Translation: Saheeh International (English)
1 i.e., a specified term which would end with their reversion to disobedience and disbelief.
Each word's meaning and sound
But when Allah removed the torment from them for a set time – before they were destroyed through drowning – they went back on their word and did not believe him or send the Israelites with him, remaining firm on their disbelief, and not allowing the Israelites to go with Moses (peace be upon him).
Al-Mukhtasar in interpreting the Noble Quran