[Machine] When the Prophet ﷺ finished from Hunayn, Umar asked the Messenger of Allah ﷺ about a vow that he had made during the days of ignorance to observe seclusion for a day, so he commanded him to fulfill it.  

لَمَّا قَفَلَ النَّبِيُّ ﷺ مِنْ حُنَيْنٍ «سَأَلَ عُمَرُ رَسُولَ اللهِ ﷺ عَنْ نَذْرٍ كَانَ نَذَرَهُ فِي الْجَاهِلِيَّةِ اعْتِكَافَ يَوْمٍ فَأَمَرَهُ بِهِ»  

"Umar had made a vow to spend a night in 'Itikaf in Al-Masjid Al-Haram. He asked the Messenger of Allah about that, and he ordered him to perform the 'Itikaf." (Using translation from Nasāʾī 3821)  

كَانَ عُمَرُ نَذَرَ فِي الْجَاهِلِيَّةِ اعْتِكَافِ لَيْلَةٍ فِي الْمَسْجِدِ الْحَرَامِ «فَسَأَلَ رَسُولَ اللهِ ﷺ عَنْ ذَلِكَ فَأَمَرَهُ أَنْ يَعْتَكِفَ»  

It was narrated from ‘Umar that he had vowed during the days of Ignorance to spend one night in I’tikaf. He asked the Prophet ﷺ about it, so he commanded him to spend it in I’tikaf. (Using translation from Ibn Mājah 1772)  

«أَنَّهُ كَانَ عَلَيْهِ لَيْلَةُ نَذْرٍ فِي الْجَاهِلِيَّةِ يَعْتَكِفُهَا فَسَأَلَ رَسُولَ اللهِ ﷺ فَأَمَرَهُ أَنْ يَعْتَكِفَ»  

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

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