Surah 113 according to the order of revelation, this is a Madani Surah revealed in the 9th year of Hijrah after the Battle of Tabuk. It has 129 verses in 16 sections.
           
The basic subjects of the Surah are:

The non-believers who broke their treaties, Muslims have no obligation to honor treaties with them. 

Muslims must protect themselves from hypocrisy, weak faith and negligence.
Battle of Tabuk and its lessons.

Following is an introduction to each section:

1. Proclamation that the Treaty of Hudaibiyah is cancelled.
2. Honor the treaties with those who honor them. Fight with those who have broken the treaty.
3. Mushrikin are forbidden to be the caretakers of the Masjid al-Haram. 
4. Muslims should trust Allah, not just their numbers.
5. Jews and Christians also committed Shirk.  Command to spend in the path of Allah.  The correct number of months.
6. The Tabuk expedition.
7. Those who stayed behind and did not participate in the Battle of Tabuk, hypocrites and weak in faith.
8. The proper distribution of charity.  Those who speak ill of the Prophet or make fun of Allah and His Book.
9. The hypocrite men and women.
10. Jihad against the unbelievers and hypocrites who attacked Islam and Muslims.
11. Severing of all ties with the hypocrites.
12. Genuine Muslims who needed exemptions from the battle. The hypocrites who made lame excuses.
13. The hypocrites and their plots against the Believers.
14. The true Believers and their characteristics.
15. Be always with those who are truthful.
16. Prophet Muhammad is a kind and compassionate person and he is deeply concerned for the well-being of the Believers.