פירוש על עזרא 7:6

and the king granted him [i.e., King] Darius.

according to the command of the Lord his God upon him as the Holy One, blessed be He, had commanded him. This verse is transposed [its meaning being]: and the King granted him his entire request, according to the command of the Lord upon him. And our Rabbis said (Meg. 15a) that Ezra and Malachi were one and the same.