PAS is firm on its stand and will not negotiate with Pakatan Harapan, which wants to have Harapan candidates fielded in the Sungai Besar and Kuala Kangsar parliamentary by-elections next month.

Its president, Abdul Hadi Awang, said PAS would no longer collaborate with the parties in the opposition pact as PAS has many too much sacrifices to save their reputation.

"If they expect us (PAS) to continue working of them, we will not do that anymore because we have sacrificed a lot of constituencies for them before and it all went unappreciated.