Surah al-Hadid (The Iron ) 57 : 13

This is unanimously a Madīnan Surah, and a study of its subject matter shows that it was probably sent down some time during the interval between the Battle of Uhud and the Truce of Hudaibiyah. This was the time when the tiny Islamic State of Madīnah had been hemmed in by the disbelievers and the handful of the ill equipped Muslims were entrenched against the combined power of entire Arabia. In this state Islam not only stood in need of the sacrifice of Life from its followers, but it also needed monetary help and assistance. In this Surah a forceful appeal has been made for the same. This view is further strengthened by verse 10 in which God has addressed the believers to the effect: “Those of you who would spend and fight after the victory can never be equal to those who have spent and fought before the victory.” And the same is supported by the traditions that Ibn Marduyah has related on the authority of Anas (a famous companion), in respect of v16, “Has the time not come for those who have believed that their hearts should become humbly submissive at the remembrance of God…”, he says that 17 years after the commencement of the revelation of the Qur’an this verse was sent down to arouse the believers to action. Thus it is thought that the period of the revelation of this Surah falls between the 4th and 5th year after the migration (Hijra).

• How We Lose Our Iman [Discussing Ayat 57:12-14]  - Nouman Ali Khan https://www.youtube.com/watch?v=DNC3y9rJI9c&feature=youtu.be