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Al-Kahf · 18:6
فَلَعَلَّكَ بَاخِعٌ نَفْسَكَ عَلَىٰ آثَارِهِمْ إِنْ لَمْ يُؤْمِنُوا بِهَٰذَا الْحَدِيثِ أَسَفًا
Yet it may be, if they believe not in this statement, that thou (Muhammad) wilt torment thy soul with grief over their footsteps.