Quoting Commentary for I Kings 11:14

With the rod of men. This refers to Haddad and Rozon, the son of Elyodoh.⁹Both were enemies of Shlomo, they are mentioned in Kings I, 11:14 and 23 respectively.

Indeed, Radak explains that Hashem motivates Hadad Ha’Edomi and Rezon ben Eliyada to rise up against Shlomo HaMelech (Melachim I 11:14-25) to make him realize that his misguided decision to tolerate his wives’ idolatry has brought ruin to the nation.

ונתן מלכיהם בידך והאבדת את שמם, for allowing any of these Canaanites to survive would become an ongoing source of irritation for you, as demonstrated by the young Haddad, sole survivor of the people of Edom, who became a lifelong source of irritation (militarily) for such a powerful king as Solomon. (Kings I 11,14 and onwards)