أَفَغَيْرَ دِينِ اللّهِ يَبْغُونَ وَلَهُ أَسْلَمَ مَن فِي السَّمَاوَاتِ وَالأَرْضِ طَوْعًا وَكَرْهًا وَإِلَيْهِ يُرْجَعُونَ
“Is it then other than Allah’s religion that they seek (to follow), and to Him submits whoever is in the heavens and the earth, willingly or unwillingly, and to Him shall they be returned”
Regarding the above verse, Imam Baqir (as) said, When Imam Mahdi (as) reappears, there will not be even one village left on this earth whose inhabitants do not testify that there is no god but Allah and Mohammed (sawa) is the Messenger of Allah. (Tafseer Ayyashi volume 1 page 182)
Imam Kazim (as) said, This verse is about when the Qaem – rises against the Jews, the Christians, the star worshippers, the infidels, the apostates, and the disbelievers everywhere in the east and the west of the world, and he will offer Islam to them. He will order those who accept it willingly to establish prayers, pay alms, and follow the obligatory rules that apply to Muslims. He will kill those who do not accept Islam. Therefore, no one will remain except for those who worship Allah.
The narrator said, “May I sacrifice myself for you. There are so many people to be killed!” Imam(as) replied, “When Allah wants something, He will turn many to few and few to many.” (Tafseer Ayyashi volume 1 page 182)
Imam Baqir (as) said, When the Qaem (as) rises, there will not be even one village left on earth whose inhabitants do not testify that there is no god but Allah and Mohammed is the Messenger of Allah. This is the meaning of the verse, “To Him submits whosoever is in the heavens and the earth, willingly or unwillingly and to Him they shall be returned” .
Imam Mahdi (as) will not accept a tax like the Messenger of Allah (from non Muslims living under Muslim rule) did, for Allah says, “And fight with them until there is no (more) mischief and the religion is only for Allah” (Chapter 2, verse 193) (Tafseer Ayyashi volume 2 page 59)