lay (something) at rest
To resolve, satisfy, or conclude something; to pacify or calm something. We've been arguing over this will for nearly a year now. Can't we just lay this all at rest? I hope this explanation will help finally lay these questions at rest. News of the bailout has laid the turbulent markets at rest, at least for the time being.
lay at rest
Also, lay to rest; set at rest. Satisfy, settle, as in I'll take care of it; you can set your mind at rest, or The arbitrator is sure to lay these questions to rest. [Late 1300s] Also see at rest; lay to rest.