That inclusion is not attested in Akkadian versions of the story, nor in contemporary sources, that would date from the period of the Akkadian Empire, but some scholars hold that Hittite version (from  1400 BCE) is conditionally reliable, and probably derived from some local sources.
The presence of the inclusion is not found in Akkadian versions or contemporary sources from the time of the Akkadian Empire, but some experts believe that the Hittite version (from 1400 BCE) might be a reliable source, possibly based on local accounts.