﴿ سَيَعْلَمُونَ غَدًۭا مَّنِ ٱلْكَذَّابُ ٱلْأَشِرُ ﴾

“[And God said:] “On the morrow they will come to know who the boastful liar is!”

Salih said to them: (Tomorrow) on the Day of Judgement (they will know who is the rash liar) who is the vain liar who lies against Allah.