Ad-Dukhaan • EN-TAFSIR-IBN-ABBAS
﴿ بَلْ هُمْ فِى شَكٍّۢ يَلْعَبُونَ ﴾
“Nay, but they [who lack inner certainty] are but Dying with their doubts.”
(Nay, but they) i.e. the disbelievers of Mecca (play in doubt) they poke fun at the coming of the Hour.