Surah Al-Qiyamah 75:28

وَظَنَّ أَنَّهُ ٱلْفِرَاقُ

And he [i.e., the dying one] is certain that it is the [time of] separation

Translation: Saheeh International

Tafsir

and he suspects he the one whose soul has reached this stage that it is the time of parting the parting with this world

Excerpt from Tafsir al-Jalalayn, commentary on 75:28, via Quran.com. The reader has the full commentary and 9 more tafsirs.