Surah Al-Mursalat, ayah 50

فَبِأَيِّ حَدِيثِۭ بَعۡدَهُۥ يُؤۡمِنُونَ ٥٠

Fabi'ayyi hadīthi ba'dahū yu'minūn

Then in what statement after it [i.e., the Qur’ān] will they believe?