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"And (remember) when you said to him (Zaid bin Harithah radhiAllaahu'anhu the freed-slave of the Prophet SAW) on whom Allaah has bestowed Grace (by guiding him to Islaam) and you (O Muhammad sal-Allaahu 'alayhe wa sallam too) have done favour (by manumitting him) "Keep your wife to yourself, and fear Allaah." But you did hide in yourself (i.e, what Allaah has already made known to you that He will give her to you in marriage) that which Allaah will make manifest, you did fear the people (i.e., Muhammad sal-Allaahu 'alayhe wa sallam married the divorced wife of his manumitted slave) whereas Allaah had a better right that you should fear Him, So when Zaid had accomplished his desire from her (i.e, divorced her), We gave her to you in marriage, so that (in future) there may be no difficulty to the believers in respect of (the marriage of) the wives of their adopted sons when the latter have no desire to keep them (i.e, they have divorced them), And Allaah's Command must be fulfilled." [Al-Ahzaab (33):37]

Narrated Abu Said Al-Khudri:

The Prophet said, "When the people of Paradise will enter Paradise and the people of Hell will go to Hell, Allah will order those who have had faith equal to the weight of a grain of mustard seed to be taken out from Hell. So they will be taken out but (by then) they will be blackened (charred). Then they will be put in the river of Haya' (rain) or Hayat (life) (the Narrator is in doubt as to which is the right term), and they will revive like a grain that grows near the bank of a flood channel. Don't you see that it comes out yellow and twisted" [The Book of Faith Volume 1, Book 2, Hadeeth 21]