This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Speak with Yeh'kinya.
My delvings into the Mosh'aru Tablets bear grim news, <name>. Hakkar's true form, the god himself, can be born again through the very egg into which you captured him. Yeh'kinya told you it was to contain his evil, but it is to recreate it! The troll has led you astray!
Go to Yeh'kinya and demand the egg from him. Pray that it is not too late to stop Hakkar's return!