حَدَّثَنَا يَحْيَى عَنْ عُبَيْدِ اللَّهِ حَدَّثَنِي نَافِعٌ عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ قَالَ أَبِي وَقَالَ يَحْيَى بْنُ سَعِيدٍ مَرَّةً عَنْ عُمَرَ أَنَّهُ قَالَ يَا رَسُولَ اللَّهِ نَذَرْتُ فِي الْجَاهِلِيَّةِ أَنْ أَعْتَكِفَ لَيْلَةً فِي الْمَسْجِدِ فَقَالَ وَفِّ بِنَذْرِكَ
مسند امام احمد بن حنبل · Hadith 4705
It was narrated that 'Abdullah ibn 'Umar said: My father said: O Messenger of Allah, during the Jaahiliyyah I vowed that i would spend a night in i'tikaaf in al-Masjid (al-Haraam). He said: "Fulfil your vow."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020