hadith
11036
۞
Imam Ali (AS) said, The possessor of certitude is the most sorrowful of all people about [the condition of] his soul.
الإمامُ عليٌّ (عَلَيهِ الّسَلامُ) : اَلمُوقِنُ أشَدُّ النّاسِ حُزْناً عَلى نَفْسِهِ