Section 215.05. Bribe receiving by a witness

A witness or a person about to be called as a witness in any action or
  proceeding  is  guilty of bribe receiving by a witness when he solicits,
  accepts or agrees to accept any benefit  from  another  person  upon  an
  agreement  or  understanding  that  (a)  his  testimony  will thereby be
  influenced, or (b) he will absent himself from, or  otherwise  avoid  or
  seek to avoid appearing or testifying at, such action or proceeding.
    Bribe receiving by a witness is a class D felony.