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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
hakim:4510 – al-Ustādh Abū al-Walīd > al-Ḥasan b. Sufyān > ʿAbd al-Aʿlá b. Ḥammād al-Narsī > Yazīd b. Zurayʿ > Saʿīd > Qatādah > Sālim b. Abū al-Jaʿd > Maʿdān b. Abū Ṭalḥah al-Yaʿmarī

[Machine] "Umar was struck on Wednesday for four more nights from the month of Dhu al-Hijjah." Al-Dhahabi remained silent about it in his summary.  

الحاكم:٤٥١٠ – حَدَّثَنَا الْأُسْتَاذُ أَبُو الْوَلِيدِ ثنا الْحَسَنُ بْنُ سُفْيَانَ ثنا عَبْدُ الْأَعْلَى بْنُ حَمَّادٍ النَّرْسِيُّ ثنا يَزِيدُ بْنُ زُرَيْعٍ عَنْ سَعِيدٍ عَنْ قَتَادَةَ عَنْ سَالِمِ بْنِ أَبِي الْجَعْدِ عَنْ مَعْدَانَ بْنِ أَبِي طَلْحَةَ الْيَعْمَرِيِّ قَالَ

«أُصِيبَ عُمَرُ يَوْمَ الْأَرْبِعَاءِ لِأَرْبَعِ لَيَالٍ بَقِينَ مِنْ ذِي الْحِجَّةِ» سكت عنه الذهبي في التلخيص  

See similar narrations below:

Collected by Ṭabarānī
tabarani:72 – Muṭṭalib b. Shuʿayb al-Azdī > ʿAbdullāh b. Ṣāliḥ > Rishdīn b. Saʿd > Abū Yūsuf al-Ḥārith b. Yūsuf al-Anṣārī from Banī al-Ḥārith b. al-Khazraj > Sahl b. Saʿd al-Anṣārī > Dufin

[Machine] "Omar was buried on Wednesday, for four remaining nights of Dhu al-Hijjah, in the year twenty-three."  

الطبراني:٧٢ – حَدَّثَنَا مُطَّلِبُ بْنُ شُعَيْبٍ الْأَزْدِيُّ ثنا عَبْدُ اللهِ بْنُ صَالِحٍ حَدَّثَنِي رِشْدِينُ بْنُ سَعْدٍ ثنا أَبُو يُوسُفَ الْحَارِثُ بْنُ يُوسُفَ الْأَنْصَارِيُّ مِنْ بَنِي الْحَارِثِ بْنِ الْخَزْرَجِ عَنْ سَهْلِ بْنِ سَعْدٍ الْأَنْصَارِيِّ قَالَ

«دُفِنَ عُمَرُ ؓ يَوْمَ الْأَرْبِعَاءِ لِأَرْبَعِ لَيَالٍ بَقِينَ مِنْ ذِي الْحِجَّةِ سَنَةَ ثَلَاثٍ وَعِشْرِينَ»