«فَأَسْرَعَا إِلَى نَدْوَتِهِ كَالسُّلَيْكِ فِي عَدْوَتِهِ»
They hurried to his assembly like al-Sulayk at full speed.
Al-Sulayk alludes to a celebrated swift runner. Nadwatihi / ʿadwatihi add a sonic echo. The simile transfers the setting quickly from the street crowd to the governor’s hearing.