Jami` at-Tirmidhi, Volume 3, Book 22, Hadith 1745 (DarusSalam) ⓘ

Narrated Anas bin Malik: "The Messenger of Allah had a ring made from silver, so he had 'Muhammad, the Messenger of Allah' engraved on it. Then he said: 'Do not engrave with it.' [Abu 'Eisa said:] This Hadith is Sahih Hasan. As for the meaning of his saying: "Do not engrave with it" - he was prohibiting that anyone have "Muhammad, Messenger of Allah" engraved on his ring.

حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ الْخَلاَّلُ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنْ ثَابِتٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم صَنَعَ خَاتَمًا مِنْ وَرِقٍ فَنَقَشَ فِيهِ مُحَمَّدٌ رَسُولُ اللَّهِ ثُمَّ قَالَ ‏"‏ لاَ تَنْقُشُوا عَلَيْهِ ‏"‏ ‏.‏ قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ صَحِيحٌ حَسَنٌ ‏.‏ وَمَعْنَى قَوْلِهِ ‏"‏ لاَ تَنْقُشُوا عَلَيْهِ ‏"‏ ‏.‏ نَهَى أَنْ يَنْقُشَ أَحَدٌ عَلَى خَاتَمِهِ مُحَمَّدٌ رَسُولُ اللَّهِ ‏.‏