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
muslim:2310b – Shaybān b. Farrūkh And ʾAbū al-Rabīʿ > ʿAbd al-Wārith > Abū al-Tayyāḥ > Anas b. Mālik

Anas b. Malik reported that Messenger of Allah ﷺ was the best amongst people in disposition and behaviour.  

مسلم:٢٣١٠b – وَحَدَّثَنَا شَيْبَانُ بْنُ فَرُّوخَ وَأَبُو الرَّبِيعِ قَالاَ حَدَّثَنَا عَبْدُ الْوَارِثِ عَنْ أَبِي التَّيَّاحِ عَنْ أَنَسِ بْنِ مَالِكٍ قَالَ

كَانَ رَسُولُ اللَّهِ ﷺ أَحْسَنَ النَّاسِ خُلُقًا  

See similar narrations below:

Collected by Aḥmad, Suyūṭī
ahmad:13856 – ʿAffān > ʿAbd al-Wārith > Abū al-Tayyāḥ > Anas b. Mālik

Anas b. Malik reported that Messenger of Allah ﷺ was the best amongst people in disposition and behaviour. (Using translation from Muslim 2310b)  

أحمد:١٣٨٥٦ – حَدَّثَنَا عَفَّانُ حَدَّثَنَا عَبْدُ الْوَارِثِ حَدَّثَنَا أَبُو التَّيَّاحِ حَدَّثَنَا أَنَسُ بْنُ مَالِكٍ قَالَ

كَانَ رَسُولُ اللهِ ﷺ أَحْسَنَ النَّاسِخُلُقًا