Baa'ri Tablet Fragment

The Baa'ri Tablet Fragments are ancient religious artifacts from the destroyed draenei village of Baa'ri. They are rumoured to contain secrets about the Temple of Karabor, now known as the Black Temple.

Source
This item drops from the Ashtongue Broken in the Ruins of Baa'ri in Shadowmoon Valley. They also can be found scattered on the ground in the Ruins.

As a quest objective
This item is an objective of Tablets of Baa'ri.