Tafsir of Al-Qalam 68:30

"...Verily, we have been wrongdoers.'' Then they turned one against another, blaming. meaning, they started blaming each other for what they had resolved to do, preventing the poor people from receiving their right of the harvested fruit. Thus, their response to each other was only to confess their error and sin

قالوا يا ويلنا إنا كنا طاغين