It was narrated that Ibn ‘Umar said: “I was with the Messenger of Allah (ﷺ) and a man from among the Ansar came to him and greeted the Prophet (ﷺ) with Salam. Then he said: ‘O Messenger of Allah, which of the believers is best?’ He said: ‘He who has the best manners among them.’ He said: ‘Which of them is wisest?’ He said: ‘The one who remembers death the most and is best in preparing for it. Those are the wisest.’”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا الزُّبَيْرُ بْنُ بَكَّارٍ، حَدَّثَنَا أَنَسُ بْنُ عِيَاضٍ، حَدَّثَنَا نَافِعُ بْنُ عَبْدِ اللَّهِ، عَنْ فَرْوَةَ بْنِ قَيْسٍ، عَنْ عَطَاءِ بْنِ أَبِي رَبَاحٍ، عَنِ ابْنِ عُمَرَ، أَنَّهُ قَالَ : كُنْتُ مَعَ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ فَجَاءَهُ رَجُلٌ مِنَ الأَنْصَارِ فَسَلَّمَ عَلَى النَّبِيِّ ـ صلى الله عليه وسلم ـ ثُمَّ قَالَ : يَا رَسُولَ اللَّهِ أَىُّ الْمُؤْمِنِينَ أَفْضَلُ قَالَ : " أَحْسَنُهُمْ خُلُقًا " . قَالَ فَأَىُّ الْمُؤْمِنِينَ أَكْيَسُ قَالَ : " أَكْثَرُهُمْ لِلْمَوْتِ ذِكْرًا وَأَحْسَنُهُمْ لِمَا بَعْدَهُ اسْتِعْدَادًا أُولَئِكَ الأَكْيَاسُ " .
sunnah.com