What are the guidance functions as described in the religion? The two sources of religion include: the verses of quran and hadith of the prophet (and hadith of imams).
A summary has been presented in the following based on the above two sources to understand the guidance functions before we can reach to the concept of guidance during the period of our time by Imam Mahdi (عليه السلام):
1. Guidance by Allah (سُبْحَانَهُ وَ تَعَالَى) & the Prophet:
And We did not send any messe
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