حَدَّثَنَا مُسَدَّدٌ حَدَّثَنَا حَمَّادٌ عَنْ عَبْدِ الْعَزِيزِ بْنِ صُهَيْبٍ عَنْ أَنَسِ بْنِ مَالِکٍ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ اتَّخَذَ خَاتَمًا مِنْ فِضَّةٍ وَنَقَشَ فِيهِ مُحَمَّدٌ رَسُولُ اللَّهِ وَقَالَ إِنِّي اتَّخَذْتُ خَاتَمًا مِنْ وَرِقٍ وَنَقَشْتُ فِيهِ مُحَمَّدٌ رَسُولُ اللَّهِ فَلَا يَنْقُشَنَّ أَحَدٌ عَلَی نَقْشِهِ
صحیح بخاری · Hadith 5878
Narrated Anas: that when Abu Bakr became the Caliph, he wrote a letter to him (and stamped it with the Prophet's ring) and the engraving of the ring was in three lines: Muhammad in one line, 'Apostle' in another line, and 'Allah' in a third line.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020