Daedra's Heart (Morrowind)

Background
Daedra's Heart is an Alchemy Ingredient obtainable in Vvardenfell. Speaking to either Tendris Vedran or Anarenen, both Alchemists, will cause the Nerevarine to learn the following information: ''A Daedra's heart must be removed during the brief period of its appearance on the mortal plane. The Daedra's heart has modest magical properties, but, since removing the heart is generally fatal to the specimen, the substance is rare and expensive. It can be used for armor if your high enogh in smithing. Sometimes alchemists will carry them but not always. Enthir on Skyrim sells 2 daedra hearts if he'll sell to you.''

Locations
The preceeding information was obtained from The Elder Scrolls III: Morrowind Construction Set
 * Zergonipal
 * Ularradallaku
 * Kushtashpi
 * Ashurnibibi

Appearances

 * The Elder Scrolls III: Morrowind (First appearance)