If all heirs, legatees and devisees in said estate do not file in court their written consent to such sale, the district court, at the time and place appointed in such order or at any other time to which the hearing may be postponed, upon satisfactory proof of service, mailing or publication of a copy of the order to show cause, and of posting the same, as provided in this chapter, by affidavit or otherwise, must proceed to hear the petition, and hear and examine the allegations and proofs of the petitioners and all heirs, legatees and devisees of said decedent who may oppose the application.
R.L.1910, § 6375; Laws 1953, p. 238, § 30.