﴿ قَالَ لَنْ أُرْسِلَهُۥ مَعَكُمْ حَتَّىٰ تُؤْتُونِ مَوْثِقًۭا مِّنَ ٱللَّهِ لَتَأْتُنَّنِى بِهِۦٓ إِلَّآ أَن يُحَاطَ بِكُمْ ۖ فَلَمَّآ ءَاتَوْهُ مَوْثِقَهُمْ قَالَ ٱللَّهُ عَلَىٰ مَا نَقُولُ وَكِيلٌۭ ﴾

“Said [Jacob]: "I will not send him with you until you give me a solemn pledge, before God, that you will indeed bring him back unto me, unless you yourselves be encompassed [by death]!" And when they had given him their solemn pledge, [Jacob] said: "God is witness to all that we say!"”

(He said) their father said to them: (I will not send him with you) simply because of your mere talk (till ye give me an undertaking) a pledge (in the name of Allah that you will bring him back to me, unless you are surrounded) unless an accident from heaven befalls you; it is also said that this means: unless an accident from heaven or from the earth descends upon you. (And when they gave him their undertaking) when they gave him their pledge in the name of Allah that they will bring him back (he said) Jacob said: (Allah is the Warden over what we say) Allah is a Witness over what we say; it is also said that this means: Allah is Custodian over what we say.