"They shall know tomorrow"—meaning: the Day of Resurrection—"who is the arrogant liar."
Muhammad said: Al-ashir (the arrogant) in the language is the insolent, the haughty. It is said: ashira, ya'sharu, asharan, so he is...
﴿سيعلمون غَدا﴾ يَعْنِي: يَوْم الْقِيَامَة ﴿مَنِ الْكَذَّابُ الأشر﴾.
قَالَ محمدٌ: الأَشِرُ فِي اللُّغَة: البَطِر المتكبر، يُقَال: أَشِرَ يأشَرُ أَشَرًا فَهُوَ