Surah Al-Inshiqaq 84:14

إِنَّهُۥ ظَنَّ أَن لَّن يَحُورَ

Indeed, he had thought he would never return [to Allāh].

Translation: Saheeh International

Tafsir

indeed he thought that an softened in place of the hardened form with its subject omitted that is to say annahu he would never return to his Lord.

Excerpt from Tafsir al-Jalalayn, commentary on 84:14, via Quran.com. The reader has the full commentary and 9 more tafsirs.