- Researches and studies
Koran, surah XVIII "Al Kahf" (The Cave)
The Christian tale of the Seven Sleepers flowed into Koran in the first verses (9-26) of the surah XVIII, named Al Kahf.
The Islamic version differs from the Christian legend in some details. Some of them are:
1. The number of the years they slept before the resurrection.
2. The presence of a dog. (link)
3. The uncertainity of the number of the sleepers.