And also the Shayatin, from every kind of builder and diver,means, among them were some whom he used to build high rooms, images, basins as large as reservoirs, and cauldrons fixed (in their places), and other difficult tasks which humans were unable to do. And there was another group, who dived into the sea recovering pearls, jewels and other precious things which cannot be found anywhere else.وَاخَرِينَ مُقَرَّنِينَ فِي الاْاَصْفَادِ