Sunan at-Tirmidhi

Anas bin Malik (may Allah be pleased with him) says that the inscription on the ring of the Prophet (peace and blessings of Allah be upon him) was such that «محمد» was on one line, «رسول» on another line, and «اللہ» on another line. © Imam Tirmidhi says: The hadith of Anas is Hasan Sahih Gharib.

Anas (may Allah be pleased with him) says that the inscription on the ring of the Prophet (peace and blessings of Allah be upon him) was in three lines: «محمد» in one line, «رسول» in one line, and «اللہ» in one line. © Imam Tirmidhi says:
1- Muhammad bin Yahya, in his narration, did not mention the three lines,
2- In this chapter, there is also a narration from Ibn Umar (may Allah be pleased with them both).