Celofa has given you a challenge to better learn the use of the riddle she gave you.
'Now that you have that old riddle of mine, I suggest you go out and put it to good use. There's no better way to learn than by doing, I say. I've gathered what information I can from all these texts you've brought me, and I think I shall be able to give you a nice reward for this next bit of burglary I'll have you do. Don't you love a good challenge?
'There is a terrible enemy in the Sixteenth Hall, an Orc named Unur. He is a curse-shouter of no small skill, and he hates Burglars more than anything, for it may have come to pass that I plucked some valuables from under his nose and sneaked away unnoticed. He will answer a summons, but be wary and bring company with you! I'll warrant he'll have some friends too.
'I may have picked his pocket, but I hadn't the gall to face him down in a fair fight. If you can defeat him, you will prove a great Burglar indeed, and I will humbly teach you all that I know.'
The Sixteenth Hall is north from the Foundations of Stone just south of Sigin-tharâk, and that is where the curse-shouter Unur may be found.
Celofa wishes you to do what she could not: to summon Unur with your scroll and defeat him in fair combat. He will likely have companions, so you should be sure bring allies on this venture.
The great Burglar Celofa can be found in the Foundations of Stone.
Celofa awaits tidings of your adventure and looks forward to humbly teaching you all that she knows.