Fiqh al-Muhadithyn

عَنِ الرِّضَا عَنْ آبَائِهِ علیهم السلام قَالَ قَالَ النَّبِیُّ صلی الله علیه و آله: أَنَا مَدِینَةُ الْعِلْمِ وَ عَلِیٌّ بَابُهَا

📚 عیون الأخبار ص ۲۲۵

Imam Reza, peace be upon him, said: The Messenger of God, peace be upon him and his progeny, said: I am the city of knowledge and Ali (may God bless him and grant him peace) is the door to it!