حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ، حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ، أَخْبَرَنَا إِسْمَاعِيلُ، رَأَيْتُ بِيَدِ ابْنِ أَبِي أَوْفَى ضَرْبَةً، قَالَ ضُرِبْتُهَا مَعَ النَّبِيِّ صلى الله عليه وسلم يَوْمَ حُنَيْنٍ‏.‏ قُلْتُ شَهِدْتَ حُنَيْنًا قَالَ قَبْلَ ذَلِكَ‏.‏

Narrated Ibn `Umar

When we returned from (the battle of) Hunain, `Umar asked the Prophet (ﷺ) about a vow which he had made during the Pre-lslamic period of Ignorance that he would perform I`tikaf. The Prophet (ﷺ) ordered him to fulfill his vow.