Board Thread:Skyrim/@comment-112.211.211.63-20130326060456/@comment-76.28.106.137-20130614051239

As has been stated above, here's the situation: if you sold Urag the Dragon Elder Scroll during the main quest line and had to buy it back for Dawnguard, it will be stuck in your inventory permanently.

No, it does not weigh anything. Despite it's listed weight as 20, quest items do not weigh anything, and so in terms of gameplay there is no real hindrance. Despite this, it's still pretty annoying for many of us to have it stuck there.

And finally, no, getting arrested will not remove it from your inventory, nor any quest item. For some quest items, they will be removed while you are in the cell and returned to you automatically upon your escape or release, and will never end up in the Belonging's chest, while other quest items will remain in your inventory the whole time.