Controversial preacher Zakir Naik must not be allowed to talk alone on a stage without the participation of another speaker, says a prominent academician Mohamad Tajudin Mohamad Rasdi.

The professor of architecture at UCSI university said Zakir's speech must be countered by other critical thinking speeches so that the audience is offered both sides of the argument.

Mohamad Tajudin said this is crucial if Zakir were to be allowed to talk at universities....