The Qur'an (or Koran) was the holy book of the Islamic faith on Earth.
In 2376, Julian Bashir considered that the cathedral artifact could be the Gamma Quadrant's version of the Koran. (DS9 - Mission Gamma novel: Cathedral)
The Qur'an was one of the texts studied by Starfleet Academy cadets who took the Ancient Literature and the Formation of Culture course in the late 24th century. (Last Unicorn RPG module: Starfleet Academy Handbook)
Jasminder Choudhury owned a Qur'an, along with a Bible and several other hardcopy books. (TNG novel: Greater Than the Sum)
