not to be convicted for an act or omission that was not an offence under either national or international law at the time it was committed or omitted;
lokungagwetywa ngesenzo okanye utyeshelo olwalungelolwaphulo-mthetho phantsi komthetho wesizwe okanye wamazwe ngamazwe ehlabathi ngexesha lokwenzeka kwaso okanye lotyeshelo olo;