Al-Kāfi
Hadith 883 4ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنِ الْحَسَنِ بْنِ مَحْبُوبٍ عَنِ ابْنِ رِئَابٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلام) قَالَ صَاحِبُ هَذَا الامْرِ لا يُسَمِّيهِ بِاسْمِهِ إِلا كَافِرٌ.
4. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn from al-Hassan ibn Mahbub from ibn Ri’ab from abu ‘Abdallah (a.s.) who has said the following. “No one will pronounce the exact name of the in charge of this task (Leadership with Divine Authority), except an unbeliever.”