Surah 12. Yusuf, Ayah 59

Lit., "a brother of yours from your father" - i.e., their half-brother Benjamin, who was Joseph's full brother (their mother having been Rachel, Jacob's favourite wife), whereas the other ten had different mothers. Benjamin, the youngest of Jacob's children, had not accompanied his brothers on their first journey to Egypt, but they had presumably mentioned him in the course of their conversation with Joseph.

 i.e., Benjamin. When Joseph hosted his half-brothers, they told him the number of people in their household for future supplies.

Joseph treated his brothers liberally. Perhaps he condescended to enter into conversation with these strangers, and enquired about their family. The ten brothers had come. Had they left a father behind them? What sort of a person was he? Very aged? Well, of course he could not come. Had they any other brothers? Doubtless the ten brothers said nothing about their lost Joseph, or told some lie about him. But perhaps their host's kindly insistence brought Benjamin into the conversation. How old was he? Why had they not brought him? Would they bring him next time? Indeed they must, or they would get no more corn, and he-the great Egyptian Wazir-would not even see them.