Surah Qaf 50:44

يَوْمَ تَشَقَّقُ ٱلْأَرْضُ عَنْهُمْ سِرَاعًا ۚ ذَٰلِكَ حَشْرٌ عَلَيْنَا يَسِيرٌ

On the Day the earth breaks away from them [and they emerge] rapidly; that is a gathering easy for Us.

Translation: Saheeh International

Tafsir

On the day when yawma substitutes for the previous yawma with the intervening statement being a parenthetical the earth is split asunder read tashaqqaqu or tashshaqqaqu where the original second tā’ of tatashaqqaqu has been assimilated with it the shīn from them they will come hastening forth sirā‘an sirā‘ the plural …

Excerpt from Tafsir al-Jalalayn, commentary on 50:44, via Quran.com. The reader has the full commentary and 9 more tafsirs.