Jami` at-Tirmidhi 1748
جامع الترمذي#1748Sahihحَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، وَمُحَمَّدُ بْنُ يَحْيَى، وَغَيْرُ، وَاحِدٍ، قَالُوا حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ الأَنْصَارِيُّ، حَدَّثَنِي أَبِي، عَنْ ثُمَامَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ كَانَ نَقْشُ خَاتَمِ النَّبِيِّ صلى الله عليه وسلم ثَلاَثَةَ أَسْطُرٍ مُحَمَّدٌ سَطْرٌ وَرَسُولُ سَطْرٌ وَاللَّهِ سَطْرٌ . وَلَمْ يَذْكُرْ مُحَمَّدُ بْنُ يَحْيَى فِي حَدِيثِهِ ثَلاَثَةَ أَسْطُرٍ . وَفِي الْبَابِ عَنِ ابْنِ عُمَرَ .
Narrated Anas bin Malik: "The inscription on the ring of the Prophet (ﷺ) was in three line: 'Muhammad' on a line, 'Messenger' on a line, 'Allah' on a line." And Muhammad bin Yahya (one of the two who narrated to him) did not say: "Three lines" in his narration. There are narrations on this topic from Ibn 'Umar. [Abu 'Eisa said:] This Hadith of Anas is a Hasan Sahih Gharib
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 24:29