The following hadith has been mentioned in other thread for discussion about the guidance function of 12th imam: H 429, Ch. 5, h 2 (Alkafi) Ali ibn Ibrahim has narrated from his father from Muhammad ibn abu ‘Umayr from Mansur ibn Yunus and Su‘dan ibn Muslim from Ishaq ibn ‘Ammara from abu ‘Abdallah ((عليه السلام).) who has said the following. "I heard the Imam ((عليه السلام).) saying, ‘The earth is never left without an Imam so that if the believers would add any thing it would be