What follows from “bi-mithlihi wa-lam yadhkur” in the second al-Mughīrah route?

The Grave Warning Against Lying About the Prophet: Narration, Intent and Critical Duty

• The first wording is conclusively fabricated
• Both chains have verbatim identical matns
• The second route has a similar report but omits the specified clause
• The second chain lacks a named Companion