The placards were likely a pointed reference to the recent controversy surrounding a proposal for mandatory halal certification for food outlets. It became a topic of contention following remarks by DAP Seputeh MP Teresa Kok.

Last week, religious affairs minister Na’im Mokhtar said Jakim was considering a proposal for halal certification to be mandatory for eateries that do not serve pork and alcohol, adding that it was currently done voluntarily.

In response, Kok called for the halal certification to remain voluntary, saying the government should allow business operators to decide based on market demand rather than forcing them.

Her remarks irked several parties including Umno Youth chief Dr Akmal Saleh, while Prime Minister Anwar Ibrahim distanced himself from Kok, saying her views were personal and not Pakatan Harapan’s.

In response to questions from reporters about the placards, Muhyiddin defended its use and admitted that they were brought on purpose.

When told about Johor menteri besar Onn Hafiz Ghazi’s hopes that issues related to race and religion will be avoided during the election campaign, Muhyiddin said: “It’s just a normal placard.”

Shortly after nominations closed, Onn Hafiz expressed hope for the by-election campaign in Mahkota to be carried out in a harmonious environment similar to that seen in the Simpang Jeram and Pulai polls last year.

“No racial or religious issues were played up (at that time). All the parties managed to campaign properly. I hope that continues,” he told reporters.

The Mahkota by-election will take place on Sept 28, with early voting set for Sept 24.