Al-Kahf 18:21 وكذالك اعثرنا عليهم ليعلموا ان وعد الله حق وان الساعة لا ريب فيها اذ يتنازعون بينهم امرهم فقالوا ابنوا عليهم بنيانا ربهم اعلم بهم قال الذين غلبوا على امرهم لنتخذن عليهم مسجدا ٢١

In this way We brought them to people’s attention so that they might know that God’s promise [of resurrection] is true and that there is no doubt about the Last Hour, [though] people argue among themselves. [Some] said, ‘Construct a building over them: their Lord knows best about them.’ Those who prevailed said, ‘We shall build a place of worship over them.’