The script is Kufic. Early Kufic has no vowels and no diacritical signs, but here one has diacritical signs indicated by small black strokes, hamza indicated by a black dot, and vowels indicated by red dots. (Maybe the black strokes were added later? They look ugly compared to the otherwise beautiful writing.)
The vowels a, u, i are indicated by a red dot above, on, or below the line. Double dots indicate -an, -un, -in.
The gold medallions indicate end-of-verse.
The text is As-Saffat 37:62 (with fragments of 61 and 63). The same in modern script:
(Is that the better entertainment, or the Tree of Zaqqum? - part of a fragment warning sinners for the fruits of the Tree of Zaqqum in hell.)