فَمَدَافِعُ الرَّيَّانِ عُرِّيَ رَسْمُهَا ۞ خَلَقًا كَمَا ضَمِنَ الْوُحِيَّ سِلَامُهَا
The traces in the watercourses of al-Rayyān have also worn away, like an inscription on stone whose carved lines have faded with time.
Madāfiʿ al-Rayyān denotes channels or watercourses of al-Rayyān. ʿUrriya rasmuhā concerns the traces wearing away. The comparison links a ruined settlement with inscription on stone: both preserve a record of the past, yet both become difficult to read as time acts upon them.