Section 331 in The Code Of Criminal Procedure, 1973
331. Resumption of inquiry or trial.
(1) Whenever an inquiry or a trial is postponed under section 328 or section 329 the Magistrate or Court as the case may be, may at any time after the person concerned has ceased to be of unsound mind resume the inquiry or trial and require the accused to appear or be brought before such Magistrate or Court.
(2) When the accused has been released under section 330 and the sureties for his appearance produce him to the officer whom the Magis- trate or Court appoints in this behalf the certificate of such officer that the accused is capable of making his defense shall be receivable in evidence.