דברי הימים ב כב:ו פירוש: רש״י

because of the smiters who smote him כִּי הַמַּכִּים. The meaning is: מִן הַמַּכִּים, because of the smiters, and so it is in II Kings (8:29).

and Azariah the son of Jehoram This is Ahaziah, and so Scripture states (ad loc.): “and Ahaziah the son of Joram went down to see Joram.”