Surah Al-Waqi'ah 56:47

وَكَانُوا۟ يَقُولُونَ أَئِذَا مِتْنَا وَكُنَّا تُرَابًا وَعِظَـٰمًا أَءِنَّا لَمَبْعُوثُونَ

And they used to say, "When we die and become dust and bones, are we indeed to be resurrected?

Translation: Saheeh International

Tafsir

And they used to say ‘What! When we are dead and have become dust and bones shall we indeed be resurrected? in both instances a-idhā and a-innā the two hamzas may be read either by pronouncing them fully or by not pronouncing the second and in either case inserting an intervening alif.

Excerpt from Tafsir al-Jalalayn, commentary on 56:47, via Quran.com. The reader has the full commentary and 9 more tafsirs.