وَعَنْ أَبِي اَلدَّرْدَاءِ رضى الله عنه
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«مَا مِنْ شَيْءٍ فِي اَلْمِيزَانِ أَثْقَلُ مِنْ حُسْنِ اَلْخُلُقِ»
“The heaviest thing which will be put on the believer’s scale (on the Day of Resurrection) will be good morals.” Related by Abu Dawud and At-Tirmidhi who graded it as Sahih.