Surah Al-Muddaththir 74:53

كَلَّا ۖ بَل لَّا يَخَافُونَ ٱلْـَٔاخِرَةَ

No! But they do not fear the Hereafter.

Translation: Saheeh International

Tafsir

No indeed! kallā a deterrent of what they desire. Rather they do not fear the Hereafter that is the chastisement thereof.

Excerpt from Tafsir al-Jalalayn, commentary on 74:53, via Quran.com. The reader has the full commentary and 9 more tafsirs.