Section 1806. Allowance or rejection of claims 1

Every  fiduciary  shall  promptly  give notice in writing to the
  claimant of the allowance of the claim or of its  rejection  or  of  the
  rejection of some part thereof which he specifies.
    2.    A  notice  rejecting a claim in whole or in part shall state the
  reasons therefor.
    3. If the fiduciary shall fail to allow the claim within 90 days  from
  the date that it has been presented to him, the claim shall be deemed to
  have been rejected.
    4.  If a claim has been allowed pursuant to the terms of this section,
  process may issue to the fiduciary requiring the fiduciary to show cause
  why the petitioner's claim should not be paid. The court may dismiss the
  petition  or  direct payment or satisfaction of the claim in whole or in
  part and may require a refunding bond.