Surah Yusuf, ayah 66

12:66

قَالَ لَنۡ أُرۡسِلَهُۥ مَعَكُمۡ حَتَّىٰ تُؤۡتُونِ مَوۡثِقٗا مِّنَ ٱللَّهِ لَتَأۡتُنَّنِي بِهِۦٓ إِلَّآ أَن يُحَاطَ بِكُمۡۖ فَلَمَّآ ءَاتَوۡهُ مَوۡثِقَهُمۡ قَالَ ٱللَّهُ عَلَىٰ مَا نَقُولُ وَكِيلٞ ٦٦

Qāla lan ursilahū ma'akum hattā tu'tūni mawthiqam minallāhi lata'tunnanī bihī illā an yuhāta bikum falammā ātawhu mawthiqahum qālallāhu 'alā mā naqūlu wakīl

[Jacob] said, "Never will I send him with you until you give me a promise [i.e., oath] by Allāh that you will bring him [back] to me, unless you should be surrounded [i.e., overcome by enemies]." And when they had given their promise, he said, "Allāh, over what we say, is Entrusted."606

Footnotes

606 i.e., sufficient to witness and deal with the matter.