Is it permissible for the one praying to change his intention from an obligatory prayer to another obligatory prayer, from a voluntary prayer to an obligatory one, and from an obligatory prayer to a voluntary one, and is this done during the prayer?

The questioner : Is it permissible for the one praying to change his intention from an obligatory prayer to another obligatory prayer, from a voluntary prayer to an obligatory one, and from an obligatory prayer to a voluntary one, and is this done during the prayer?

The Shaykh : As for changing from an obligatory prayer to a voluntary one, it is permissible. As for changing from a voluntary prayer to an obligatory one, it is not permissible, because it is not permissible to move from the weak to the strong. However, moving from the weak to the strong is permissible.
Yes.