Surah 12. Yusuf, Ayah 92

Joseph is most generous. He is glad that they have at last seen the significance of what happened. But he will not allow them at this great moment of reconciliation to dwell on their conduct with reproaches against themselves. There is more urgent work to do. An aged and beloved father is eating out his heart in far Canaan in love and longing for his Joseph, and he must be told all immediately, and "comforted in body, mind, and estate," and so he tells the brothers to hurry back immediately with his shirt as a sign of recognition, as a proof of these wonderful happenings.