Surah Ghafir 40:18

وَأَنذِرْهُمْ يَوْمَ ٱلْـَٔازِفَةِ إِذِ ٱلْقُلُوبُ لَدَى ٱلْحَنَاجِرِ كَـٰظِمِينَ ۚ مَا لِلظَّـٰلِمِينَ مِنْ حَمِيمٍ وَلَا شَفِيعٍ يُطَاعُ

And warn them, [O Muḥammad], of the Approaching Day, when hearts are at the throats, filled [with distress]. For the wrongdoers there will be no devoted friend and no intercessor [who is] obeyed.

Translation: Saheeh International

Tafsir

And warn them of the Impending Day namely the Day of Resurrection al-azifa as in azifa al-rahīlu ‘departure is very near’ when the hearts will rising up in fear reach the throats choking with anguish filled with suppressed anxiety kāzimīna is a circumstantial qualifier referring to al-qulūbu ‘the hearts’ which is …

Excerpt from Tafsir al-Jalalayn, commentary on 40:18, via Quran.com. The reader has the full commentary and 9 more tafsirs.