Yūsuf

فإِن لَمْ تَأْتُونِي بِهِ فَلا كَيْلَ لَكُمْ عِنْدِي وَلاَ تَقْرَبُونِ

60. “But if you do not bring him to me you shall have no measure (of corn) from me nor shall you (even) come near me.”

After words of encouragement and showing his affection and hospitality, he warns them of the consequences; if they did not bring their brother with them the next time, they would get no wheat from him and they would not even be able to get close to him, for bringing their brother would be a proof of good faith in their dealings. The verse says:

“But if you do not bring him to me you shall have no measure (of corn) from me nor shall you (even) come near me.”

This was the perfect pretext to get the brothers to bring Benjamin to him. Incidentally, these interpretations make it clear that the buying and selling of grain in Egypt was not commonly done by weight but by volume; and also this shows that Yusuf was, in all respects, a hospitable person.