"Anas bin Malik was asked: 'Did the Prophet wear a ring?' He said: 'Yes.' One night he delayed the 'Isha' prayer until almost the middle of the night. When he had prayed, he turned to face us and said: 'The people have prayed and gone to sleep, but you will still be in a state of prayer so long as you are waiting for the (next) prayer.'" (Sahih)Anas said: "It was as if I can see the sparkle from his ring.'"
سُئِلَ أَنَسُ بْنُ مَالِكٍ هَلِ اتَّخَذَ النَّبِيُّ ﷺ خَاتَمًا قَالَ نَعَمْ أَخَّرَ لَيْلَةً الْعِشَاءَ الآخِرَةَ إِلَى قَرِيبٍ مِنْ شَطْرِ اللَّيْلِ فَلَمَّا صَلَّى أَقْبَلَ عَلَيْنَا بِوَجْهِهِ فَقَالَ إِنَّ النَّاسَ قَدْ صَلَّوْا وَنَامُوا وَإِنَّكُمْ لَنْ تَزَالُوا فِي صَلاَةٍ مَا انْتَظَرْتُمُ الصَّلاَةَ قَالَ أَنَسٌ كَأَنِّي أَنْظُرُ إِلَى وَبِيصِ خَاتَمِهِ