Hadith 5023
وَعَن أَسمَاء بنت يزِيد أَنَّهَا سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «أَلَا أُنَبِّئُكُمْ بِخِيَارِكُمْ؟» قَالُوا: بَلَى يَا رَسُولَ اللَّهِ قَالَ: «خِيَارُكُمُ الَّذِينَ إِذَا رُؤوا ذُكِر الله» رَوَاهُ ابْن مَاجَه
It is narrated from Asma bint Yazid (may Allah be pleased with her) that she heard the Messenger of Allah (peace and blessings be upon him) say: "Shall I not tell you about the best among you?" The companions (may Allah be pleased with them) said: "O Messenger of Allah! Please do tell us." He (peace and blessings be upon him) said: "The best among you are those who, when they are seen, Allah is remembered." Hasan, narrated by Ibn Majah.