The Prophet ﷺ got a ring made for himself and said, "I have got a ring made (for myself) and engraved a certain engraving on it so none of you should get such an engraving on his ring." I saw the glitter of the ring on his little finger.  

صَنَعَ النَّبِيُّ ﷺ خَاتَمًا قَالَ إِنَّا اتَّخَذْنَا خَاتَمًا وَنَقَشْنَا فِيهِ نَقْشًا فَلاَ يَنْقُشْ عَلَيْهِ أَحَدٌ قَالَ فَإِنِّي لأَرَى بَرِيقَهُ فِي خِنْصَرِهِ