Azra's Staffs

 is a quest in.

Background
The quest can be started by speaking to Neloth and asking if he needs help with his research:

 Can I help with your research?: "Perhaps later. For now I have a slightly more personal request. You see, I'm a collector. Of staffs. Magical staffs. In particular, those made by Azra Nightwielder. Through some divinations, I believe I've located one. If you retrieve it, I'll give you a staff of my own making. Nightwielder's creations don't really hold up in comparison to what can be made today, but they have a sentimental value for me. You understand."

He can also be questioned further about Azra Nightwielder:

Who was Azra Nightwielder?: "He was the original shadowmage. His advances in magic are legendary. Less well known is that he was also a pioneer in the field of enchanting staffs. Every staff of his that I have uncovered has led me to greater understanding. Today we would consider his techniques rudimentary, but the genius is still evident."

Walkthrough
Travel to a radiant location in Skyrim or Solstheim, and retrieve the staff which is always located in a chest. The staff will be found in either a Bandit Camp, Dragon Lair, Dragon Priest Lair, Draugr Crypt, Falmer Hive, Forsworn Camp, Hagraven Nest, Vampire Lair or Warlock Lair.

Possible locations

 * Bleak Falls Barrow
 * Blind Cliff Cave
 * Bloodlet Throne
 * Boulderfall Cave
 * Broken Helm Hollow
 * Chillwind Depths
 * Darkwater Pass
 * Duskglow Crevice
 * Eldersblood Peak
 * Embershard Mine
 * Falkreath Watchtower (Labeled as Crossroads Watchtower)
 * Fellglow Keep
 * Folgunthur
 * Forsaken Cave
 * Geirmund's Hall
 * Gloomreach
 * Halldir's Cairn
 * Harmugstahl
 * High Gate Ruins
 * Hob's Fall Cave
 * Kagrenzel
 * Mara's Eye Pond
 * Moldering Ruins
 * Rift Watchtower
 * Serpent's Bluff Redoubt
 * Sightless Pit
 * Snapleg Cave
 * Stony Creek Cave
 * Sunderstone Gorge
 * Swindler's Den
 * Into Tolvald's Cave, through Tolvald's Gap, and finally in Tolvald's Crossing.
 * Treva's Watch
 * Volunruud
 * Yngvild

Possible staves
Upon retrieving the staff, return to Neloth, who will then grant the Dragonborn a leveled staff as a reward:
 * Azra's Staff of Dread Zombies
 * Azra's Staff of the Storm Atronach
 * Azra's Grand Staff of Turning
 * Azra's Staff of Paralysis
 * Azra's Grand Staff of Repulsion
 * Azra's Staff of Charming
 * Azra's Staff of Daedric Command
 * Azra's Staff of Fear
 * Azra's Staff of Fireballs

I've got Azra's staff: "You didn't have to speak a word. I could sense it the moment you came in. You've proven your worth, and I'm as good as my word. Take this staff from my personal collection. I think you'll find it useful."

Reward

 * Random leveled staff

Trivia

 * Azra Nightwielder was a character in.
 * It is possible to keep whatever staff is required to turn in, simply by placing it on a weapon rack, and then turning the quest in to Neloth.

Journal
Azras Stäbe Посохи Азры