وَحَدَّثَنَا يَحْيَى بْنُ صَاعِدٍ ، ثنا مُحَمَّدُ بْنُ يَعْقُوبَ بْنِ عَبْدِ الْوَهَّابِ الزُّبَيْرِيُّ ، ثنا مُحَمَّدُ بْنُ فُلَيْحِ بْنِ سُلَيْمَانَ ، عَنْ عُبَيْدِ اللَّهِ بْنِ عُمَرَ ، عَنْ نَافِعٍ ، عَنِ ابْنِ عُمَرَ ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ رَضِيَ اللَّهُ عَنْهُ ، كَانَ نَذَرَ فِي الْجَاهِلِيَّةِ أَنْ يَعْتَكِفَ لَيْلَةً فِي الْمَسْجِدِ الْحَرَامِ ، فَلَمَّا كَانَ الإِسْلامُ سَأَلَ عَنْهُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، فَقَالَ لَهُ : " أَوْفِ بِنَذْرِكَ " . فَاعْتَكَفَ عُمَرُ لَيْلَةً . إِسْنَادٌ ثَابِتٌ.
Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates: Sayyiduna Umar bin Khattab (may Allah be pleased with him) had made a vow in the days of ignorance that he would perform i'tikaf (spiritual retreat) for one night in Masjid al-Haram. When the era of Islam came, he asked the Prophet Muhammad (peace and blessings be upon him) about this matter, so he said: "Fulfill your vow." So Sayyiduna Umar (may Allah be pleased with him) performed i'tikaf for one night. Its chain of narration is authentic.