Hijra
Hijra is the colony planet of Muslims who migrated from Earth. It was first colonized by Caliph Alai of Ender's Jeesh after the failed Invasion of China by the Muslim Empire in Shadow of the Giant. It was briefly mentioned in Children of the Mind. It is named after Muhammad's pilgrimage from Mecca to Medina. The reason the colony was established was because the Caliph decided that Islam had to be separated from territorial and racial interests, and that such a thing could never occur on Earth.
Read more about this topic: List Of Ender's Game Series Planets