Okla. Stat. tit. 22, § 22-973: Court may hear further evidence, when

After a plea or verdict of guilty in a case where the extent of

the punishment is left with the court, the court, upon the

suggestion of either party that there are circumstances which may be

properly taken into view, either in aggravation or mitigation of the

punishment, may in its discretion hear the same summarily at a

specified time and upon such notice to the adverse party as it may

direct.