This is a makki Surah and it has 50 ayaat. The Holy Prophet (S) has said that the one who recites this Surah will not be counted from the Mushrikeen (polytheists). He will always be victorious over his enemy.

It is narrated from Imam Jafar as-Sadiq (a.s.) that drinking this Surah after it is written, and then dissolved in water that is mixed with the water from an onion, acts as a cure from aches and pains. Keeping this Surah, written on deerskin, as a talisman, enables one to reduce the amount of time he sleeps and he will be able to stay awake for a longer time.