إِنَّ فِى خَلْقِ السَّمَـوَتِ وَالاٌّرْضِ وَاخْتِلَـفِ اللَّيْلِ وَالنَّهَارِ لاّيَـتٍ لاٌّوْلِى الاٌّلْبَـبِ
Verily, in the creation of the heavens and the earth, and in the alternation of night and day, there are indeed signs for men of understanding.
Ibn Marduwyah recorded that `Ata' said,
"I, Ibn `Umar and `Ubayd bin `Umayr went to `A'ishah and entered her room, and there was a screen between us and her.
She said, `O `Ubayd! What prevents you from visiting us'
He said, `What the poet said, `Visit every once in a while, and you will be loved more.'
Ibn `Umar said, `Tell us about the most unusual thing you witnessed from the Messenger of Allah .'
She cried and said, `All his matters were amazing. On night, he came close to me until his skin touched my skin and said, `Let me worship my Lord.'
I said, `By Allah I love your being close to me. I also love that you worship your Lord.'
He used the water-skin and performed ablution, but did not use too much water. He then stood up in prayer and cried until his beard became wet. He prostrated and cried until he made the ground wet. He then laid down on his side and cried.
When Bilal came to alert the Prophet for the Dawn prayer, he said, `O Messenger of Allah! What makes you cry, while Allah has forgiven you your previous and latter sins'
He said,
«وَيْحَكَ يَا بِلَالُ، وَمَا يَمْنَعُنِي أَنْ أَبْكِيَ، وَقَدْ أُنْزِلَ عَلَيَّ فِي هذِهِ اللَّيْلَة»
(O Bilal! What prevents me from crying, when this night, this Ayah was revealed to me,)
إِنَّ فِى خَلْقِ السَّمَـوَتِ وَالاٌّرْضِ وَاخْتِلَـفِ اللَّيْلِ وَالنَّهَارِ لاّيَـتٍ لاٌّوْلِى الاٌّلْبَـبِ
Verily, in the creation of the heavens and the earth, and in the alternation of night and day, there are indeed signs for men of understanding.
«وَيْلٌ لِمَنْ قَرَأَهَا وَلَمْ يَتَفَكَّرْ فِيهَا»
(Woe to he who recites it but does not contemplate it.).''
Surah 'Aal Imraan - Tafsir ibn Kathir
http://www.tafsir.com/default.asp?sid=3&tid=10145
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