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"Allaah will not punish you for what is uninentional in your oaths, but He will punish you for your deliberate oaths; for its expiation (a deliberate oath) feed ten Masakin (poor persons), on a scale of the average of that with which you feed your own families; or clothe them; or manumit a slave, But whosoever cannot afford (that), then he should fast for three days, That is the expiation for the oaths when you have sworn, And protect your oaths (i.e, do not swear much), Thus Allaah make clear to you His Ayaat (proofs, evidences, verses, lessons, signs, revelations, etc.) that you may be grateful." [Al-Maa'idah (5):89]

Narrated Asma:

I came to 'Aa'ishah while she was praying, and said to her, "What has happened to the people?" She pointed out towards the sky. (I looked towards the mosque), and saw the people offering the prayer. Aisha said, "Subhan Allah." I said to her, "Is there a sign?" She nodded with her head meaning, "Yes." I, too, then stood (for the prayer of eclipse) till I became (nearly) unconscious and later on I poured water on my head. After the prayer, the Prophet praised and glorified Allah and then said, "Just now at this place I have seen what I have never seen before, including Paradise and Hell. No doubt it has been inspired to me that you will be put to trials in your graves and these trials will be like the trials of Masiah-ad-Dajjal or nearly like it (the sub narrator is not sure which expression Asma' used). You will be asked, 'What do you know about this man (the Prophet Muhammad)?' Then the faithful believer (or Asma' said a similar word) will reply, 'He is Muhammad Allah's Apostle who had come to us with clear evidences and guidance and so we accepted his teachings and followed him. And he is Muhammad.' And he will repeat it thrice. Then the angels will say to him, 'Sleep in peace as we have come to know that you were a faithful believer.' On the other hand, a hypocrite or a doubtful person will reply, 'I do not know, but I heard the people saying something and so I said it.' (the same). " [The Book of Knowledge Volume 1, Book 3, Hadeeth 86]