What is the meaning of: "Qays (a measure) between his birth and the termination of his trace in Paradise," and what is the consequent reward for that?

The meaning of the Hadith is that a Muslim will have a space in Paradise estimated by the distance between their place of birth and their place of death, and this is their reward. It has also been reported in another narration that whoever dies as a stranger away from their land, their space in Paradise will be measured from their burial place to their birthplace.