Yusuf 12:66

He said, “I will never send him with you unless you give me a pledge by Allah that you will surely bring him back to me, unless you are completely overpowered.” Then when they gave him their pledge, he said, “Allah is Witness to what we say.”

[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]

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

66. He [Ya‘qûb (Jacob)] said: "I will not send him with you until you swear a solemn oath to me in Allâh’s Name, that you will bring him back to me unless you are yourselves surrounded (by enemies)," And when they had sworn their solemn oath, he said: "Allâh is the Witness to what we have said."

He said: I will not send him with you till ye give me an undertaking in the name of Allah that ye will bring him back to me, unless ye are surrounded. And when they gave him their undertaking he said: Allah is the Warden over what we say.