Ан-Нас

And from his narration on the authority of Ibn 'Abbas that he said regarding the interpretation of Allah's saying (Say: I seek refuge): '(Say: I seek refuge) and it is also said this means: I seek protection (in the Lord of mankind) in the Lord of the jinn and humankind,

(The King of mankind) the King of the jinn and humankind,

(The God of mankind) the Creator of the jinn and humankind,

(From the evil of the sneaking whisperer) i.e. Satan who runs away and hides himself whenever Allah is mentioned,

(Who whispereth in the hearts of mankind) and when Allah is not mentioned, he whispers in the hearts of created beings,

(Of the jinn and of mankind) He says: Satan whispers in the hearts of the jinn just as he whispers in the hearts of mankind. The last two surah were revealed about Labid Ibn al-A'sam, the Jew, who used black magic on the Prophet (pbuh) and when the Prophet (pbuh) read these two surahs on Labid's black magic, Allah relieved him from it and it was as if he was untied from his fetters'.