It was narrated that Ibn ‘Umar said: “The Messenger of Allah (صلى الله عليه و سلم) said: ‘Whoever reads Surat al-Kahf on the day of Jumu’ah, a light will shine for him from beneath his feet to the clouds of the sky, which will shine for him on the Day of Resurrection, and he will be forgiven (for his sins) between the two Fridays.’”