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:4798[Chain 1] Abū ʿAmr Muḥammad b. ʿAbdān al-Adīb > Abū Bakr al-Ismāʿīlī > Abū Manṣūr Aḥmad b. Muḥammad b. ʿĪsá al-Ḥalabī And ʿAbd Allāh b. Muḥammad al-Imām > Dāwud b. ʿAmr > Nāfiʿ b. ʿUmar [Chain 2] Abū Bakr al-Ismāʿīlī > Abū Bakr al-Fāriyābī > ʿAlī b. Naṣr > al-ʿAlāʾ b. ʿAbd al-Jabbār > Nāfiʿ b. ʿUmar > Ibn Abū Mulaykah

[Machine] Ibn Abbas was asked, "What is your opinion about Muawiyah?" He replied, "He performs the Witr prayer only with one unit." He said, "He is correct; indeed, he is knowledgeable."  

البيهقي:٤٧٩٨وَأَخْبَرَنَا أَبُو عَمْرٍو مُحَمَّدُ بْنُ عَبْدَانَ الْأَدِيبُ أنبأ أَبُو بَكْرٍ الْإِسْمَاعِيلِيُّ أَخْبَرَنِي أَبُو مَنْصُورٍ أَحْمَدُ بْنُ مُحَمَّدِ بْنِ عِيسَى الْحَلَبِيُّ وَعَبْدُ اللهِ بْنُ مُحَمَّدٍ الْإِمَامُ قَالَا ثنا دَاوُدُ بْنُ عَمْرٍو ثنا نَافِعُ بْنُ عُمَرَ ح قَالَ وَأَخْبَرَنَا أَبُو بَكْرٍ الْإِسْمَاعِيلِيُّ ثنا أَبُو بَكْرٍ الْفَارِيَابِيُّ ثنا عَلِيُّ بْنُ نَصْرٍ ثنا الْعَلَاءُ بْنُ عَبْدِ الْجَبَّارِ ثنا نَافِعُ بْنُ عُمَرَ عَنِ ابْنِ أَبِي مُلَيْكَةَ قَالَ

قِيلَ لِابْنِ عَبَّاسٍ هَلْ لَكَ فِي مُعَاوِيَةَ؟ مَا أُوتِرَ إِلَّا بِرَكْعَةٍ‍‍ قَالَ أَصَابَ؛ إِنَّهُ فَقِيهٌ  

رَوَاهُ الْبُخَارِيُّ فِي الصَّحِيحِ عَنِ ابْنِ أَبِي مَرْيَمَ عَنْ نَافِعِ بْنِ عُمَرَ الْجُمَحِيِّ