Dua of Hazrat Yusuf (as)

It is quoted from the tafsir of Abu Hamza Thumali that the man who purchased Yusuf was Malik bin Za’ra. From the time he purchased Yusuf there was prosperity in his economic conditions, he earned more profit during the trip. This continued until they resold him. The increase did not continue after that. Malik was much attracted towards Yusuf and saw in him the traces of nobility and his elegant countenance. One day he told Yusuf to describe his genealogy. Yusuf said he was the son of Ya‘qub, son of Ishaq, son of Ibrahim. On hearing this Malik picked him up and began to weep. Then he told Yusuf that he had no children and wanted Allah to bestow him with many sons. Yusuf prayed for this man and he had twelve twins in a row - all males.

Reference: Hayat Al-Qulub, Vol. 1, Stories of the Prophets