Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
abudawud:4220 – Muḥammad b. Yaḥyá b. Fāris > Abū ʿĀṣim > al-Mughīrah b. Ziyād > Nāfiʿ > Ibn ʿUmar Bihadhā al-Khabar

They searched for it but could not find it. 'Uthman then fashioned a signet-ring and engraved on it "Muhammad, the Messenger of Allah". He used to wear it or stamp with it.  

أبو داود:٤٢٢٠ – حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى بْنِ فَارِسٍ حَدَّثَنَا أَبُو عَاصِمٍ عَنِ الْمُغِيرَةِ بْنِ زِيَادٍ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ بِهَذَا الْخَبَرِ

عَنِ النَّبِيِّ ﷺ قَالَ فَالْتَمَسُوهُ فَلَمْ يَجِدُوهُ فَاتَّخَذَ عُثْمَانُ خَاتَمًا وَنَقَشَ فِيهِ مُحَمَّدٌ رَسُولُ اللَّهِ قَالَ فَكَانَ يَخْتِمُ بِهِ أَوْ يَتَخَتَّمُ بِهِ