Overall meaning :
The Muhajiroon (Emigrants), who have embraced the faith and believed in everything they thought to believe in, left their homes and unbelieving people, spent their wealth to support Allah’s religion and striven hard with their possessions and their lives for Allah’s cause, as well as the Ansar (Helpers), who sheltered the Messenger of Allah, may Allah bless him and grant him peace, and his Companions, the Muhajiroon, and aided them against their enemies, are true allies and supporters of one another. As for those who have embraced the faith but have not left their homes for the land of Islam, you are not in any way responsible for their protection until they leave the abode of unbelief to the abode of Islam. But if they ask you for help against religious persecution, it is your duty to give them such assistance, unless they ask your support against an unbelieving people with whom you have a peace treaty, in which case you should not betray the unbelievers by violating such a treaty. Allah sees what you do, so do not disobey His command.
The Almighty then asserts that the unbelievers are allies and supporters of one another, then, warning the believers, He states that unless they act likewise among themselves, there will be dissension and great corruption in the land.
The Muhajiroon (Emigrants), who have embraced the faith and fought the unbelievers to make Allah’s religion reign supreme, as well as the Ansar (Helpers), who have sheltered and aided them and striven hard to champion Allah’s religion, are indeed the true believers. They will receive Allah’s forgives as well as a bountiful provision in Paradise.
Addressing the Muhajiroon and the Ansar, Allah says: Those who believed afterwards, emigrated from the abode of unbelief to the abode of Islam and fought for the cause of Allah alongside with you to make His religion reign supreme are of you: T Then He states that those who are bound by ties of blood are more entitled to inherit from one another and proclaims that He has knowledge of all things.