PN Chairman Tan Sri Muhyiddin Yassin has rebuked "irresponsible" accusations levelled by caretaker Prime Minister Datuk Seri Ismail Sabri Yakob against him and PN ministers for making the federal government untenable and forcing the dissolution of Parliament, but given his blessings to a continued cooperation in Sabah's GRS-BN government, of which Ismail's Umno and Muhyiddin's Bersatu are components