Surah Yusuf, Verse 66
قَالَ لَنْ أُرْسِلَهُۥ مَعَكُمْ حَتَّىٰ تُؤْتُونِ مَوْثِقًۭا مِّنَ ٱللَّهِ لَتَأْتُنَّنِى بِهِۦٓ إِلَّآ أَن يُحَاطَ بِكُمْ ۖ فَلَمَّآ ءَاتَوْهُ مَوْثِقَهُمْ قَالَ ٱللَّهُ عَلَىٰ مَا نَقُولُ وَكِيلٌۭ
Translation — Sahih International
[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."
Source
Kur'an-ı Kerim, Yûsuf Suresi 12:66
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/12-suresi-66-ayet