Surah Ad-Dukhan 44:9

بَلْ هُمْ فِى شَكٍّ يَلْعَبُونَ

But they are in doubt, amusing themselves.

Translation: Saheeh International

Tafsir

Nay but they linger in doubt concerning the Resurrection playing in mockery of you O Muhammad (s) and so he said ‘My God assist me against them with seven years of drought like the seven of Joseph’.

Excerpt from Tafsir al-Jalalayn, commentary on 44:9, via Quran.com. The reader has the full commentary and 9 more tafsirs.