The Collaborative International Dictionary of English v.0.48:

Inure \In*ure"\, v. i.
   To pass into use; to take or have effect; to be applied; to
   serve to the use or benefit of; as, a gift of lands inures to
   the heirs. [Written also enure.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Enure \En*ure"\, v. t.
   See Inure.
   [1913 Webster]