Almighty Allah narrated: So, when they returned to their father, they said: "0 our father! No more measure of grain shall we get (unless we take our brother). So send our brother with us, and we shall get our measure and truly we will guard him." He said: "Can I entrust him to you except as I entrusted his brother (Joseph) to you aforetime? But Allah is the best to guard, and He is the Most Merciful of those Who show mercy.
And when they opened their bags, they found their money had been returned to them. They said: "0 our father! What (more) can we desire? This, our money has been returned to us, so we shall get (more) food for our family, and we shall guard our brother and add one more measure of a camel's load. This quantity is easy (for the king to give)."
He (Jacob) said: "I will not send him with you until you swear a solemn oath to me in Allah's Name, that you will bring him back to me unless you are yourselves surrounded (by enemies, etc.)." And when they had sworn their solemn oath, he said: 'Allah is the Witness over what we have said."
And he said: "0 my sons! Do not enter by one gate, but by different gates, and I cannot avail you against Allah at all. Verily! The decision rests only with Allah. In Him, Iput my trust and let all those that trust, put their trust in Him." Surah 12: 63-67
Jacob blessed them on their departure and prayed to Allah for their protection. The brothers undertook the long journey to Egypt, taking good care of Benjamin.