Hadith 2079
۞
73. Amīr al-mu’minīn, peace be upon him, said: Whoever places himself as a leader of the people should commence with educating his own self before educating others; and his teaching should be by his own conduct before teaching by the tongue. The person who teaches and instructs his own self is more entitled to esteem then he who teaches and instructs others.
٧٣. وَقَالَ (عليه السلام): مَنْ نَصَبَ نَفْسَهُ لِلنَّاسِ إِمَاماً فَلْيَبْدَأْ بِتَعْلِيمِ نَفْسِهِ قَبْلَ تَعْلِيمِ غَيْرِهِ، وَلْيَكُنْ تَأْدِيبُهُ بِسِيرَتِهِ قَبْلَ تَأْدِيبِهِ بِلِسَانِهِ، وَمُعَلِّمُ نَفْسِهِ وَمُؤَدِّبُهَا أَحَقُّ بِالْإِجْلَالِ مِنْ مُعَلِّمِ النَّاسِ وَمُؤَدِّبِهِمْ.