Sahih Bukhari Volume 6, Book 65, Hadith 4835

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، عَنْ مَالِكٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يَسِيرُ فِي بَعْضِ أَسْفَارِهِ وَعُمَرُ بْنُ الْخَطَّابِ يَسِيرُ مَعَهُ لَيْلاً، فَسَأَلَهُ عُمَرُ بْنُ الْخَطَّابِ عَنْ شَىْءٍ، فَلَمْ يُجِبْهُ رَسُولُ اللَّهِ صلى الله عليه وسلم ثُمَّ سَأَلَهُ فَلَمْ يُجِبْهُ، ثُمَّ سَأَلَهُ فُلَمْ يُجِبْهُ، فَقَالَ عُمَرُ بْنُ الْخَطَّابِ ثَكِلَتْ أُمُّ عُمَرَ، نَزَرْتَ رَسُولَ اللَّهِ صلى الله عليه وسلم ثَلاَثَ مَرَّاتٍ، كُلَّ ذَلِكَ لاَ يُجِيبُكَ‏.‏ قَالَ عُمَرُ فَحَرَّكْتُ بَعِيرِي، ثُمَّ تَقَدَّمْتُ أَمَامَ النَّاسِ، وَخَشِيتُ أَنْ يُنْزَلَ فِيَّ الْقُرْآنُ، فَمَا نَشِبْتُ أَنْ سَمِعْتُ صَارِخًا يَصْرُخُ بِي فَقُلْتُ لَقَدْ خَشِيتُ أَنْ يَكُونَ نَزَلَ فِيَّ قُرْآنٌ‏.‏ فَجِئْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم فَسَلَّمْتُ عَلَيْهِ فَقَالَ ‏"‏ لَقَدْ أُنْزِلَتْ عَلَىَّ اللَّيْلَةَ سُورَةٌ لَهِيَ أَحَبُّ إِلَىَّ مِمَّا طَلَعَتْ عَلَيْهِ الشَّمْسُ ‏"‏‏.‏ ثُمَّ قَرَأَ ‏"‏‏{‏إِنَّا فَتَحْنَا لَكَ فَتْحًا مُبِينًا‏}‏‏"‏

Narrated By Aslam : While Allah's Apostle was proceeding at night during one of his journeys and 'Umar bin Al-Khattab was travelling beside him, 'Umar asked him about something but Allah's Apostle did not reply. He asked again, but he did not reply, and then he asked (for the third time) but he did not reply. On that, 'Umar bin Al-Khattab said to himself, "Thakilat Ummu 'Umar (May 'Umar's mother lose her son)! I asked Allah's Apostle three times but he did not reply." 'Umar then said, "I made my camel run faster and went ahead of the people, and I was afraid that some Qur'anic Verses might be revealed about me. But before getting involved in any other matter. I heard somebody calling me. I said to myself, 'I fear that some Qur'anic Verses have been revealed about me,' and so I went to Allah's Apostle and greeted him. He (Allah's Apostle) said, 'Tonight a Sura has been revealed to me, and it is dearer to me than that on which the sun rises (i.e. the world)' Then he recited: "Verily, We have given you a manifest victory." (48.1)