Is it permissible to combine the Duha and Istikhara prayers into a single prayer?

It is permissible to combine the intentions of Duha prayer and Istikhara prayer in a single prayer, and the worshipper should bring to mind the intention for both at the beginning of the prayer. Al-Hafiz Ibn Hajar pointed this out, citing Al-Nawawi, explaining that if one intends that specific prayer and the Istikhara prayer together, it is sufficient.