Prophet Yusuf (Joseph) - Jacob's Request to Find Joseph

The father was deeply hurt. Only prayer could comfort him and strengthen his faith and patience. Weeping all those years for his beloved son Joseph - and now one more of his best sons had been snatched from him - Jacob almost lost his sight.

The other sons pleaded with him: "0 father, you are a noble prophet and a great messenger of Allah. Unto you descended revelation and people received guidance and faith from you. Why are you destroying yourself in this way?"

Jacob replied: "Rebuking me will not lessen my grief. Only the return of my sons will comfort me. My sons, go in search of Joseph and his brother; do not despair of Allah's mercy."

Jacob's Request to Find Joseph - Qur'anic
Allah, the Almighty told us: They said: "By Allah! You will never cease remembering Joseph until you become weak with old age, or until you be of the dead."
He said. "I only complain of my grief and sorrow to Allah, and I know from Allah that which you know not. 0 my sons! Go you and enquire about Joseph and his brother, and never give up hope of Allah's Mercy. Certainly no one despairs of Allah's Mercy, except the people who disbelieve." Surah 12: 85-87

Joseph Reveals Himself
The caravan set out for Egypt. The brothers - on their way to see the chief minister (Joseph) - were poor and depressed.
On reaching Egypt they collected Judah and called on Joseph, to whom they pleaded: "0 ruler of the land! A hard time has hit us and our family, and we have brought but poor capital, so pay us full measure and be charitable to us. Truly, Allah does reward the charitable." Surah 12: 88
At the end, they begged Joseph. They asked alms of him, appealing to his heart, reminding him that Allah rewards alms givers. At this moment, in the midst of their plight, Joseph spoke to them in their native tongue saying: "Do you know what you did with Joseph and his brother, when you were ignorant?"
They said: "Are you indeed Joseph?"
He said: "I am Joseph, and this is my brother (Benjamin). Allah has indeed been Gracious to us. Verily, he who fears Allah with obedience to Him (by abstaining from sins and evil deeds, and by performing righteous good deeds), and is patient, then surely, Allah makes not the reward of the good doers to be lost."
They said: "By Allah! Indeed Allah has preferred you above us, and we certainly have been sinners. " Surah 12: 89-91
The brothers began to tremble with fear, but Joseph comforted them: "No reproach on you this day, may Allah forgive you, and He is the Most Merciful of those who show mercy!" Surah 12: 92