Al-Adab Al-Mufrad, Book 14, Hadith 272 (English) ⓘ
'Amr ibn Shu'ayb reported from his grandfather that the Prophet, may Allah bless him and grant him peace, said, "Shall I tell you about who among you I love the most and the one who will be seated closest to me on the Day of Rising?" The people were silent, so he repeated that two or three times. Then the people said, "Yes, Messenger of Allah." He said, "The one among you with the best character."
حَدَّثَنَا عَبْدُ اللهِ بْنُ صَالِحٍ قَالَ: حَدَّثَنِي اللَّيْثُ قَالَ: حَدَّثَنِي يَزِيدُ بْنُ الْهَادِ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، أَنَّهُ سَمِعَ النَّبِيَّ صلى الله عليه وسلم يَقُولُ: أُخْبِرُكُمْ بِأَحَبِّكُمْ إِلَيَّ، وَأَقْرَبِكُمْ مِنِّي مَجْلِسًا يَوْمَ الْقِيَامَةِ؟ فَسَكَتَ الْقَوْمُ، فَأَعَادَهَا مَرَّتَيْنِ أَوْ ثَلاَثًا، قَالَ الْقَوْمُ: نَعَمْ يَا رَسُولَ اللهِ، قَالَ: أَحْسَنُكُمْ خُلُقًا.
also referenced under: Hadith 272 (Reference) & Book 14, Hadith 272 (In-Book)