Does the Qur'an affirm that Islam is a religion for all times and places, and for all humanity, and that "a mercy to the worlds" means the obligation to spread it among all peoples, and does the Qur'an indicate the obligation for the government to be Islamic?

Firstly: The prophetic hadiths are a proof and a source of legislation. The Qur’an indicates that Allah revealed to His Prophet something else alongside the Qur’an called “wisdom,” as in Surat An-Nisa (4:113), Al-Jumu’ah (62:2), and Al-Ahzab (33:34). Allah Almighty commanded us to obey the Messenger and to take what he commanded, as in Surat Al-Hashr (59:7). The details of prayer, zakat, fasting, and Hajj are all found in the hadiths.

Secondly: Islam is the religion in the sight of Allah Almighty, and it is universal for every time, place, and nation. The message of Prophet Muhammad, peace and blessings be upon him, is global for all people until the Day of Judgment.

Thirdly: An Islamic government must rule by what Allah has revealed and resort to His divine revelation sent down from the heavens, as stated in Surat Al-Ma’idah (5:44-49), Al-An’am (6:57), and Ash-Shura (42:10).

Fourthly: Muslims are advised to strengthen their connection with the Book of Allah and the Sunnah of His Prophet, and to strive in seeking Islamic knowledge. Ibn Hibban narrated from Abu Umamah that he said: The Messenger of Allah, peace and blessings be upon him, said: "The bonds of Islam will be undone one by one. Whenever a bond is undone, people will cling to the next. The first of them to be undone is ruling, and the last is prayer."