قالَ لَن أُرسِلَهُ مَعَكُم حَتّىٰ تُؤتونِ مَوثِقًا مِنَ اللَّهِ لَتَأتُنَّني بِهِ إِلّا أَن يُحاطَ بِكُم ۖ فَلَمّا آتَوهُ مَوثِقَهُم قالَ اللَّهُ عَلىٰ ما نَقولُ وَكيلٌ

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