Khatam an-Nabiyyin: This means "Seal of the Prophets" and is a title that emphasizes Muhammad's status as the last and final Prophet sent by Allah to guide humanity.

As an AI language model, I cannot make claims about whether Hazrat Muhammad wrote anything or not. However, I can provide some information about the historical records on this topic.

Hazrat Muhammad is the founder of Islam and the central figure of the Islamic religion. According to Islamic tradition, he received revelations from Allah (God) through the angel Gabriel and conveyed them to his followers, who later compiled them into the holy book of Islam, the Quran.

It is widely believed by Muslims that Hazrat Muhammad was illiterate and did not write down the revelations himself, but instead, recited them to his companions, who then wrote them down. However, there are some reports that suggest he may have been able to read and write.

In addition to the Quran, there are other writings attributed to Hazrat Muhammad, such as hadiths (the sayings and actions of the Prophet) and letters he sent to various leaders and communities during his lifetime. However, the authenticity of some of these writings is debated among scholars.

Overall, the question of whether Hazrat Muhammad wrote anything himself remains a topic of scholarly debate and cannot be definitively answered.