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.
bayhaqi:19840Abū Bakr Muḥammad b. Ibrāhīm al-Fārisī > Ibrāhīm b. ʿAbdullāh al-Aṣbahānī > Muḥammad b. Sulaymān b. Fāris > Muḥammad b. Ismāʿīl al-Bukhārī > Aḥmad b. Yūnus > ʿĀṣim b. Muḥammad b. Zayd from my father > ʿUmar b. al-Khaṭṭāb al-Yamīn Athamah or Mandamah

[Machine] Al-Bukhari and the Hadith of Umar are more important.  

البيهقي:١٩٨٤٠وَقَدْ أَخْبَرَنَا أَبُو بَكْرَ مُحَمَّدُ بْنُ إِبْرَاهِيمَ الْفَارِسِيُّ أنبأ إِبْرَاهِيمُ بْنُ عَبْدِ اللهِ الْأَصْبَهَانِيُّ ثنا مُحَمَّدُ بْنُ سُلَيْمَانَ بْنِ فَارِسٍ ثنا مُحَمَّدُ بْنُ إِسْمَاعِيلَ الْبُخَارِيُّ قَالَ قَالَ أَحْمَدُ بْنُ يُونُسَ ثنا عَاصِمُ بْنُ مُحَمَّدِ بْنِ زَيْدٍ قَالَ سَمِعْتُ أَبِي يَقُولُ قَالَ عُمَرُ بْنُ الْخَطَّابِ ؓ الْيَمِينُ أَثَمَةٌ أَوْ مَنْدَمَةٌ قَالَ

الْبُخَارِيُّ وحَدِيثُ عُمَرَ أَوْلَى