ask Muhammad three questions: According to Ibn Ishaq, when Muhammad was informed of the three questions from the rabbis, he said that he would have the answers in the morning but did not say "if God wills it". For fifteen days, Muhammad waited eagerly for the revelation. Muhammad did not answer the question until then. Doubt in Muhammad began to grow amongst the people of Mecca. Then, after fifteen days, Muhammad received the revelation of al-Kahf as an answer to the questions. Virtues There is a hadith in Sahih Muslim that states that Muhammad said (Concerning The False Messiah, Al-Masih ad-Dajjal): "Whoever reads Sura Kahf on Friday, light shall shine forth for him between the two Fridays." Common Muslim and Christian theme The story of believers falling asleep in a cave for a long time is present also in the Christian tradition, see Seven Sleepers. See also Ashabi-Kahf in Nakhchivan a sanctuary in a natural cave Appendix Notes References Bibliography External links Q18:51, 50+ translations, islamawakened.com Quran 18 Clear Quran translation Surah Kahf by Sudais Kahf Dhul-Qarnayn Gog and Magog Dogs in religion Moses