Tafsir of Al-Humazah 104:9

Then Allah says,

في عمد ممددة

In pillars stretched forth. Atiyah Al-`Awfi said, "Pillars of Iron.'' As-Suddi said, "Made of fire.'' Al-`Awfi reported from Ibn `Abbas, "He will make them enter pillars stretched forth, meaning there will be columns over them, and they will have chains on their necks, and the gates (of Hell) will be shut upon them.'' This is the end of the Tafsir of Surah Al-Humazah, and all praise and thanks are due to Allah