Whoever claims that ruling by the positive laws that contradict Allah's Shari`ah is permissible, or that they are more appropriate for people than Allah's Shari`ah, or even that there is no difference between ruling by Allah's Shari`ah and ruling by manmade laws that are incompatible with His Shari`ah (Glorified and Exalted be He), will be a Murtad (apostate) and Kafir (disbeliever) if they were Muslims before announcing or believing in this. This is declared by the people of knowledge and Iman among scholars of Tafsir (explanation/ exegesis of the meanings of the Qur'an) and Muslim jurists regarding the ruling on the Murtad. So, whoever is confused with any of what we have mentioned must resort to what scholars have mentioned in the Tafsir of the previous Ayahs, such as Imam Ibn Jarir, Imam AlBaghawy, AlHafizh Ibn Kathir and others. They should refer to what the scholars have mentioned concerning the ruling on the Murtad i.e. a person who converts to kufr after Islam, to know the truth and the doubtful matters then become clear to them.
As for whoever rules by other than what Allah (Exalted be He) has revealed while knowing this because of taking a bribe to rule in favor of the defendant, enmity toward a person against whom the ruling is to be issued or any other reason, they will be committing a great evil, a major sin, and an act of Kufr, Zhulm and Fisq. Yet, this does not bring them out of the pale of Islam. However, they will still be committing a serious act of disobedience and will be subject to Allah's Punishment and Torment, and they are in great danger of the relapse of their heart and attaining apostasy from Islam. We seek refuge in Allah from this. Some scholars may call this minor Kufr, Fisq and Zhulm, according to a reported related from Ibn `Abbas (may Allah be pleased with both of them) and a group of Salaf (righteous predecessors) (may Allah be merciful to them).
I ask Allah to adjust the conditions of all Muslims and grant them good understanding of His Din, enable them to thank Him for His Bounty, adjust their leaders and appoint whoever is best among them to rule them. I ask Him to support His Din, rise His Word, let the enemies of Islam down wherever they are, and protect all Muslims from straying Fitan (sedition/ seduction/ trial) and the causes of His wrath. He is the AllAble to do this.
May Peace and blessings be upon our Prophet Muhammad, his family, and Companions!