This quest appears in your journal if you've injured or killed (intentionally or unintentionally) one of the Dark Brotherhood members. As a "punishment" you have to go to Nazir, who stays in the hideout of the organization and after starting a conversation with him agree to pay the fins - 500 gold pieces (screen above).
You are not permitted to copy any image, text or info from this page.
This site is not associated with and/or endorsed by the Bethesda Softworks or Bethesda Softworks. All logos and images are copyrighted by their respective owners.