Al-Mukhtasar
مُسْتَكْبِرِينَ بِهِۦ سَـٰمِرًا تَهْجُرُونَ ﴿٦٧﴾
You did that displaying arrogance over the people, because you thought you were the people of the sanctuary while you were not; the true people of the sanctuary are the Mindful. You also talked ill of it by night and would not deem it sacred.