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
ibnmajah:2115 – ʿAlī b. Muḥammad > Wakīʿ > ʿAlī b. Ṣāliḥ > Ashʿath b. Abū al-Shaʿthāʾ > Muʿāwiyah b. Sūwayd b. Muqarrin > al-Barāʾ b. ʿĀzib

'The Messenger of Allah ﷺ commanded us to help fulfill the oath."  

ابن ماجة:٢١١٥ – حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ حَدَّثَنَا وَكِيعٌ عَنْ عَلِيِّ بْنِ صَالِحٍ عَنْ أَشْعَثَ بْنِ أَبِي الشَّعْثَاءِ عَنْ مُعَاوِيَةَ بْنِ سُوَيْدِ بْنِ مُقَرِّنٍ عَنِ الْبَرَاءِ بْنِ عَازِبٍ قَالَ

أَمَرَنَا رَسُولُ اللَّهِ ﷺ بِإِبْرَارِ الْمُقْسِمِ  

See similar narrations below:

Collected by Ṭabarānī
tabarani:10404 – Muḥammad b. ʿAbdullāh al-Ḥaḍramī > Ibrāhīm b. ʿAbs al-Tanūkhī > Yaḥyá b. Yaʿlá > ʿĪsá b. al-Musayyab > Qays b. Abū Ḥāzim > ʿAbdullāh

[Machine] "We were instructed to uphold the oath."  

الطبراني:١٠٤٠٤ – حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللهِ الْحَضْرَمِيُّ ثنا إِبْرَاهِيمُ بْنُ عَبْسٍ التَّنُوخِيُّ ثنا يَحْيَى بْنُ يَعْلَى عَنْ عِيسَى بْنِ الْمُسَيَّبِ عَنْ قَيْسِ بْنِ أَبِي حَازِمٍ عَنْ عَبْدِ اللهِ قَالَ

«أُمِرْنَا بِإِبْرَارِ الْقَسَمِ»