Yusuf 12:66

Qala lan orsilahu maAAakum hattatu/tooni mawthiqan mina Allahi lata/tunnanee bihi illaan yuhata bikum falamma atawhu mawthiqahum qalaAllahu AAala ma naqoolu wakeel

[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."

He said, “I shall never send him with you until you give me a pledge in the name of Allah that you will definitely bring him back to me, unless you are overpowered (by circumstances).” So, when they gave him their pledge, he said, “Allah is watchful over what we say.”