It was narrated from Asma’ bint Yazid that she heard the Messenger of Allah ﷺ say:
“Shall I not tell you of the best of you?” They said: “Yes, O Messenger of Allah.” He said: “The best of you are those who, when they are seen, Allah the Mighty, the Majestic, is remembered.”

حَدَّثَنَا سُوَيْدُ بْنُ سَعِيدٍ، حَدَّثَنَا يَحْيَى بْنُ سُلَيْمٍ، عَنِ ابْنِ خُثَيْمٍ، عَنْ شَهْرِ بْنِ حَوْشَبٍ، عَنْ أَسْمَاءَ بِنْتِ يَزِيدَ، أَنَّهَا سَمِعَتْ رَسُولَ اللَّهِ ﷺ يَقُولُ " أَلاَ أُنَبِّئُكُمْ بِخِيَارِكُمْ " . قَالُوا بَلَى يَا رَسُولَ اللَّهِ . قَالَ " خِيَارُكُمُ الَّذِينَ إِذَا رُءُوا ذُكِرَ اللَّهُ عَزَّ وَجَلَّ " .