And We sent to Midian their brother Shu‘ayb. He said ‘O my people! Worship God and anticipate the Last Day fear it namely the Day of Resurrection; and do not be degenerate in the earth working corruption’ mufsidīna is a circumstantial qualifier emphasising its operator wa-lā ta‘thaw ‘do not be degenerate’; it the verb derives from ‘athiya meaning afsada ‘he corrupted’.