Seven Sleepers of Ephesus:-
This is story which appears in Sura al Kahaf (Cave) 18:9-31 of the Quran was PLAGIARISED from Christian legends and adapted by Muhammad after having removed all Christian elements from it.
A considerable portion of these legends is to be found in the homilies of Jacob of sarug, a Mesoptamian Christian who wrote at the end of the fifth century.