Among the greatest blessings that Allah Almighty gave to this people is the completion of this religion as in His word:
ٱليوم أكملت لكم دينكم وأتممت عليكم نعمتى ورضيت لكم ٱلإسلم دينا
Today I have perfected your religion for you, and I have granted you my favor, and Kuridhai Islam has become a religion for you. (Sura al-Ma’idah : 3)
Imam Ibnu Katsir Rahimahullahu Ta’ala said, “This is the greatest pleasure of Allah to Subhanahu wa Ta’ala, where Allah Subhanahu wa Ta’ala has perfected their religion so that they do not need a religion other than that. And (nor need) prophets other than their prophet; therefore, Allah Subhanahu wa Ta’ala made it (Prophet Muhammad’allahu’Alaihi wa Sallam) as the closing of the prophets and sent him to the jinn and man, then there is nothing kosher besides what he is proclaiming, there is nothing forbidden except that he haramkan, no religion other than what he shari’atkan, and every what he preach is true and honest, there is no lie in it. ”
Islam is a comprehensive system, covering all sides of life. He is the country and the homeland, the government and the people, morality and power, compassion and justice, civilization and laws, science and judiciary, material and natural wealth, income and wealth, jihad and da’wah, troops and thought. He is a straight aqidah, true worship, no less nothing more.
Syumul (universality) is one of Islamic characters that is very special when compared with the man-made order, be it communism, capitalism, democracy and others. The universality of Islam includes time, place and all spheres of life. The great Egyptian cleric Asy-Syahid Hasan Al Banna said “Islamic treatise has such a wide range that it applies to all peoples, and a very deep reach to cover the whole affairs of the world and the hereafter.”
Ibn ‘Abbas radhiyallahu’ anhuma said,
أنه قد أكمل لهم الإيمان, فلا يحتاجون إلى زيادة أبدا, وقد أتمه الله عز ذكره فلا ينقصه أبدا, وقد رضيه الله فلا يسخطه أبدا.
“Allah has perfected Islam, so they (Muslims) do not need to add the teachings of the Messenger forever and Allah has made the teachings of Islam perfect so do not be reduced forever. If Allah has been blessed, then let no one be angry with the teachings of Islam forever. (Issued by Ibn Jarir Ath Thobari in his tafsir)
So there is no choice and the law is obliged to follow Islam as Allah commands and it applies to every age and place. Allah Ta’ala has ordered to follow the religion brought by Muhammad as mentioned in the verse below,
قل إن كنتم تحبون الله فاتبعوني يحببكم الله ويغفر لكم ذنوبكم والله غفور رحيم (31) قل أطيعوا الله والرسول فإن تولوا فإن الله لا يحب الكافرين (32)
“Say:” If you (truly) love God, follow me, Allah will love and forgive your sins. “Allah is Forgiving, Most Merciful. Say: “Ta’atilah Allah and His Apostle; if you turn away, then surely Allah does not like the disbelievers “.” (Surah Ali Imran: 31-32).
May Allah always give guidance to us for istiqomah in Dienul Islam.