[Moses] said, "That is [established] between me and you. Whichever of the two terms I complete - there is no injustice to me, and Allah, over what we say, is Witness."
The Saheeh International Quran Translation
قَالَ ذَٰلِكَ بَيْنِى وَبَيْنَكَ أَيَّمَا ٱلْأَجَلَيْنِ قَضَيْتُ فَلَا عُدْوَٰنَ عَلَىَّ وَٱللَّهُ عَلَىٰ مَا نَقُولُ وَكِيلٌ[Moses] said, "That is [established] between me and you. Whichever of the two terms I complete - there is no injustice to me, and Allah, over what we say, is Witness."