What are the circumstances under which the powers under Rule 9 of the CCS (Pension) Rules can be invoked?

What are the circumstances under which the powers under Rule 9 of the
CCS (Pension) Rules can be invoked?
Powers under Rule 9 can be invoked “if, in any departmental or judicial proceedings,
the pensioner is found guilty of grave misconduct or negligence during the period of
service, including service rendered upon re-employment after retirement”