20:106
فَيَذَرُهَا قَاعًا صَفْصَفًا
fayadharuhā qāʿan ṣafṣafan
And He will leave it [i.e., the earth] a level plain;
— Saheeh International
and leave a flat plain,
— M. A. S. Abdel Haleem
"Then He shall leave them as a level smooth plain.
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali