Moon of Hamavaran or King of Hamavaran?

In the tale of Rostam and Esfandyar, Katayun in order to stop Esfandyar from going to Sistan and confront Rostam reminds him of Rostam’s heroic deeds and his services to save Iran and thus states: “He who killed the moon of Hamavaran/person had the audacity to question him”.In this couplet the moon of Hamavaran means Sudabeh and although this couplet appear in only one copy (in London, Britain 675Hijra) in all authentic and semi authentic editions of Shahnameh had been chosen. However in most manuscripts it is the king of Hamavaran which exists and this is encountered in merely certain stone and less authentic Shahnameh editions. Since in the report about the battle of Hamavaran in Shahnameh, the king of hamavaran begged Rostam for mercy and thus is not killed by him, editors regarded the version of King of hamavaran as incorrect and ignore this possibility whereas the study of various Farsi and Arabic sources indicate that from the story of the battle of hamavaran several versions at least three different reports exist in some of them the king of Hamavaran stays alive and in some other gets killed by Rostam. The reference for the aforementioned couplet above belongs to the second group of narratives related to the final destingy of King of hamavaran and is documented and based on the authentic and genunine source even earlier than Shahnameh which is also reflected in another couplet in the tale of Rostam and Esfandyar. Based on this latter evidence the register of “King of Hamavaran” which apparently seems incorrect, from the story’s point of view is reliable and also as far as criteria for the correction of the text are concerned since most editions agree and rely on the latter authentic source and the fact that it is more complex than the register “Moon of Hamavaran”,King of Hamavaran should be included in the final text of Shahnameh.