Al-Adab Al-Mufrad, Book 14, Hadith 285 (In-Book) ⓘ
Abu Hurayra said, "I heard Abu'l-Qasim say, 'The best of you in Islam is the best of you in character when they possess understanding (of the deen)."
حَدَّثَنَا حَجَّاجُ بْنُ مِنْهَالٍ، قَالَ: حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ مُحَمَّدِ بْنِ زِيَادٍ قَالَ: سَمِعْتُ أَبَا هُرَيْرَةَ يَقُولُ: سَمِعْتُ أَبَا الْقَاسِمِ صلى الله عليه وسلم يَقُولُ: خَيْرُكُمْ إِسْلاَمًا أَحَاسِنُكُمْ أَخْلاَقًا إِذَا فَقِهُوا.
also referenced under: Hadith 285 (Reference) & Book 14, Hadith 285 (English)