Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai-kubra:3341Abū Bakr b. ʿAlī > al-Ḥasan b. Ḥammād al-Warrāq > ʿAmr b. Muḥammad al-ʿAnqazī > ʿAbdullāh b. Budayl b. And Rqāʾ > ʿAmr b. Dīnār > Ibn ʿUmar

[Machine] That Umar asked the Messenger of Allah about seclusion, so he ordered him to seclude himself and fast.  

الكبرى للنسائي:٣٣٤١أَخْبَرَنَا أَبُو بَكْرِ بْنُ عَلِيٍّ قَالَ حَدَّثَنَا الْحَسَنُ بْنُ حَمَّادٍ الْوَرَّاقُ قَالَ أَخْبَرَنَا عَمْرُو بْنُ مُحَمَّدٍ الْعَنْقَزِيُّ عَنْ عَبْدِ اللهِ بْنِ بُدَيْلِ بْنِ وَرْقَاءَ عَنْ عَمْرِو بْنِ دِينَارٍ عَنِ ابْنِ عُمَرَ

أَنَّ عُمَرَ «سَأَلَ رَسُولَ اللهِ ﷺ عَنِ اعْتِكَافٍ عَلَيْهِ فَأَمَرَهُ أَنْ يَعْتَكِفَ وَيَصُومَ»  


See similar narrations below:

Collected by Nasāʾī, Aḥmad
nasai:3822Aḥmad b. ʿAbdullāh b. al-Ḥakam > Muḥammad b. Jaʿfar > Shuʿbah > ʿUbaydullāh > Nāfiʿ > Ibn ʿUmar

It was narrated from Ibn 'Umar that 'Umar had vowed -during the Jahiliyyah- to spend a day in 'Itikaf. He asked the Messenger of Allah about that, and he commanded him to perform the 'Itikaf.  

النسائي:٣٨٢٢أَخْبَرَنَا أَحْمَدُ بْنُ عَبْدِ اللَّهِ بْنِ الْحَكَمِ قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ قَالَ حَدَّثَنَا شُعْبَةُ قَالَ سَمِعْتُ عُبَيْدَ اللَّهِ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ

أَنَّ عُمَرَ كَانَ جَعَلَ عَلَيْهِ يَوْمًا يَعْتَكِفُهُ فِي الْجَاهِلِيَّةِ فَسَأَلَ رَسُولَ اللَّهِ ﷺ عَنْ ذَلِكَ فَأَمَرَهُ أَنْ يَعْتَكِفَهُ  

ahmad:5539Muḥammad > Shuʿbah > ʿUbaydullāh b. ʿUmar > Nāfiʿ > Ibn ʿUmar

It was narrated from Ibn 'Umar that 'Umar had vowed -during the Jahiliyyah- to spend a day in 'Itikaf. He asked the Messenger of Allah about that, and he commanded him to perform the 'Itikaf. (Using translation from Nasāʾī 3822)  

أحمد:٥٥٣٩حَدَّثَنَا مُحَمَّدٌ حَدَّثَنَا شُعْبَةُ عَنْ عُبَيْدِ اللهِ بْنِ عُمَرَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ

أَنَّ عُمَرَ كَانَ قَدْ جَعَلَ عَلَيْهِ يَوْمًا يَعْتَكِفُهُ فِي الْجَاهِلِيَّةِ فَسَأَلَ رَسُولَ اللهِ ﷺ عَنْ ذَلِكَ فَأَمَرَهُ أَنْ يَعْتَكِفَ