Impatience of a Saint

It can be accepted while in the Soul Cairn from a soul named Jiub.

Background
''While exploring the Soul Cairn, I've come across the soul of a strange Dunmer named Jiub. He claims to be writing the second volume of his life's story but lacks the notes from his first in order to complete it. He's asked for my help in locating the pages which are likely spread across the entire Soul Cairn...quite a daunting task.''

Walkthrough
Jiub can be found approximately East-Southeast from Valerica's location, among a grove of dead trees along a path. He asks the Dragonborn to find the ten pages of his book spread across the Soul Cairn. Upon completion of this quest, the Dragonborn will be rewarded the Locket of Saint Jiub and a pristine copy of Saint Jiub's Opus.

Page locations
The staircase you descended to enter the Soul Cairn is located in the south-western end of the map. The prison holding Valerica is directly north-east of that staircase (with the path connecting the two running SW to NE), and roughly halfway between them is a large, fortified wall cutting across that path perpendicularly: NW to SE. Jiub himself is located to the southeast of Valerica's prison, beyond the farmer and his two cows, on the southern side of a large building.