It is narrated from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) concerning this saying of Allah Almighty, "Allah is the Light of the heavens and the earth" [Surah al-Nur: 35] , that he recited this verse and then said: "And those who disbelieve, their deeds are like a mirage in a barren plain which the thirsty one thinks is water, until, when he comes to it, he finds it to be nothing, and he finds Allah there, who pays him his account in full; and Allah is swift in reckoning" [Surah al-Nur: 39] . He said: Likewise, the disbeliever will come on the Day of Resurrection thinking that he has some good with Allah, but he will not find it, and Allah will admit him into the Fire. Then he gave another example for the disbeliever and said: "Or (their example is) like the darknesses in a deep sea, covered by wave upon wave, above which are clouds; darknesses, one above another. When one puts out his hand, he can hardly see it. And the one for whom Allah has not made light has no light" [Surah al-Nur: 40] . He said: So he moves about in five kinds of darkness: his speech is darkness, his deeds are darkness, his entering is darkness, his exiting is darkness, and his destination on the Day of Resurrection is the darknesses of Hell. This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.