At its height the Ottomans ruled not only Saudi Arabia but all of the Middle East and parts of southern Europe. Attacks within and outside the empire added to the weakening of the empire. Perhaps anticipating its downfall they brought to Istanbul relics of our Prophet SAW - hair, swords, shoes, clothing for safe keeping. They can be seen at the Tokapi Museum.
The Wahabi Saudis believe it is bida'ah to keep artefacts and historical sites such as Khadijah's house, masjids built by the Prophet or during his time. What is there left in Saudi Arabia to remind us of the past for all Muslims in the future? What about the Saudi king's palace taking much space in Masjidil Haram, and so is Holiday Inn!
Many historical documents and works of arts on Islam are being kept in museums or libraries of Istanbul, Tehran, Paris, London, New York, Berlin, Leiden where images of the Prophet are found.
The contention is that the depiction of the Prophet's images was not to show the actual images of him but mere graphical narration of particular events of his life. This is a carryover effect inherited from Greek, Roman, Jewish, and Christian styles glorifying their gods into pictures. This is more so because Arabic scholars translated and learned texts of preceding civilisations.