Surah An-Naba 78:1
عَمَّ يَتَسَآءَلُونَ
About what are they asking one another?
Translation: Saheeh International
Tafsir
About what about what thing are they the people of Quraysh questioning one another?
Excerpt from Tafsir al-Jalalayn, commentary on 78:1, via Quran.com. The reader has the full commentary and 9 more tafsirs.