Former inspector-general of police Musa Hassan has criticised Pahang mufti Abdul Rahman Osman's labelling of non-Muslims supposedly opposed to Islam as kafir harbi, or infidels that can be slain.

"We can't just say things like that. We need to do research first, on whether it's true or not.

"To generalise like that is not good," he told a press conference in Petaling Jaya today.

Musa said this was no different from generalising some people as terrorists.

"We can't just generalise, we need to study if it is true. Only then we can call someone a terrorist," he said.

Last Friday, Abdul Rahman was quoted by Umno-owned Utusan Malaysia as labelling DAP as "kafir harbi". He was commenting on DAP's opposition to hudud.

Abdul Rahman later clarified that he was not only referring to DAP, but to all non-Muslims in general who opposed Islam.