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.
muslim:2511fʿAmr b. ʿAlī b. Baḥr > Abū Dāwud > Ḥarb b. Shaddād > Yaḥyá b. Abū Kathīr > Abū Salamah > Abū Usayd al-Anṣārī > Rasūl

The worthiest of the Ansar or the worthiest of the settlements and the clans of Ansar; the rest of the hadith is the same, but there is no mention of the story of Sa'd b. 'Ubida (Allah be pleased with him).  

مسلم:٢٥١١fحَدَّثَنَا عَمْرُو بْنُ عَلِيِّ بْنِ بَحْرٍ حَدَّثَنِي أَبُو دَاوُدَ حَدَّثَنَا حَرْبُ بْنُ شَدَّادٍ عَنْ يَحْيَى بْنِ أَبِي كَثِيرٍ حَدَّثَنِي أَبُو سَلَمَةَ أَنَّ أَبَا أُسَيْدٍ الأَنْصَارِيَّ حَدَّثَهُ

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ خَيْرُ الأَنْصَارِ أَوْ خَيْرُ دُورِ الأَنْصَارِ بِمِثْلِ حَدِيثِهِمْ فِي ذِكْرِ الدُّورِ وَلَمْ يَذْكُرْ قِصَّةَ سَعْدِ بْنِ عُبَادَةَ ؓ