They said, "Are you indeed Joseph?" He said "I am Joseph, and (12:90)

﴿قَالُوا أَإِنَّكَ لَأَنتَ يُوسُفُ ۖ قَالَ أَنَا يُوسُفُ وَهَٰذَا أَخِي ۖ قَدْ مَنَّ اللَّهُ عَلَيْنَا ۖ إِنَّهُ مَن يَتَّقِ وَيَصْبِرْ فَإِنَّ اللَّهَ لَا يُضِيعُ أَجْرَ الْمُحْسِنِينَ﴾
[ يوسف: 90]

12:90 They said, "Are you indeed Joseph?" He said "I am Joseph, and this is my brother. Allah has certainly favored us. Indeed, he who fears Allah and is patient, then indeed, Allah does not allow to be lost the reward of those who do good."

They were amazed, and asked whether he was in fact Joseph.
Joseph said to them that he was indeed Joseph, and that the person with him was his full brother.
Allah had favoured them, saving them from their previous situation, raising them in rank.
Whoever is Mindful, following what He instructs and staying away from what He has prohibited, and being patient with hardship, their actions are good, and Allah does not allow the reward of those who do good to be lost; rather, He keeps it in store for them.

They said: "Are you indeed Yusuf (Joseph)?" He said: "I am Yusuf (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 Muhsinun (good-doers - see V. 2:112) to be lost."

phonetic Transliteration

Qaloo ainnaka laanta yoosufa qala ana yoosufu wahatha akhee qad manna Allahu AAalayna innahu man yattaqi wayasbir fainna Allaha la yudeeAAu ajra almuhsineena

Abdullah Yusuf Ali - Translation

They said: "Art thou indeed Joseph?" He said, "I am Joseph, and this is my brother: Allah has indeed been gracious to us (all): behold, he that is righteous and patient,- never will Allah suffer the reward to be lost, of those who do right."

Safi-ur-Rahman al-Mubarakpuri

They said: "Are you indeed Yusuf" He said: "I am Yusuf, and this is my brother. Allah has indeed been gracious to us. He who has Taqwa, and is patient, then surely, Allah makes not the reward of the gooddoers to be lost."

Page 246 English transliteration