Al-Adab Al-Mufrad
Book 14, Hadith 270
حَدَّثَنَا أَبُو الوَلِيدِ قَالَ : حَدَّثَنَا شُعْبَةُ، عَنِ الْقَاسِمِ بْنِ أَبِي بَزَّةَ،قَالَ سَمِعْتُ عَطَاءٍ الْكَيْخَارَانِيِّ، عَنْ أُمِّ الدَّرْدَاءِ، عَنْ أَبِي الدَّرْدَاءِ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " مَا مِنْ شَىْءٍ أَثْقَلُ فِي الْمِيزَانِ مِنْ حُسْنِ الْخُلُقِ"
Unreviewed translation. All hadiths in this collection are available in five languages. Titles and introductions may remain in Arabic.
Abu al-Walid narrated to us: Shu‘ba narrated to us, from al-Qasim ibn Abi Buzza, who said: I heard ‘Ata al-Kaykharaani, from Umm al-Darda’, from Abu al-Darda’, from the Prophet ﷺ, who said: ‘There is nothing heavier in the balance than good character.’
Notes and open questions — unreviewed
The report uses the singular ‘the balance’ and the general phrase ‘good character’; the English witness has the same central wording.