Translation of the verse 38 from Surah sad : Number of verses 88 - - page 455 - Part 23.
And also others bound in fetters.
And others bound together in shackles.
(38:38) and others that were bound with chains. *38
*38) For explanation, see Al-Anbiya': 82, An-Naml: 17, 39 and the E.N.'s thereof. "The satans" imply the jinns, and "the satans bound in chains" imply the serving satans, who were fettered and imprisoned as a punishment for making mischief. It is not necessary that the fetters and chains in which those satans were bound might be made of iron and they might appear as bound in them like the human prisoners. In any case, they were imprisoned in a manner that they could neither escape nor were able to commit further mischief.
Source : sad Verse 38: And others bound together in shackles.