Matters in which scholarly disagreement is permissible and matters in which it is not

Question:
He says: What are the rulings and issues in which disagreement is permissible, and those in which it is not permissible, with some examples, if you would be so kind?

Answer:
First, regarding creed, disagreement is not permissible. The word of the Ummah (the Muslim community) has agreed upon creed, except for those who are in the shade and deviate. There is no disagreement in creed, praise be to Allah. As for fiqh (Islamic jurisprudence), this is only for specialized scholars. Disagreement occurs among specialized scholars, not among every student or every self-taught person who says, "I will exercise independent legal reasoning (ijtihad)." No, that is not appropriate. This is the domain of specialized scholars. As for beginners and the common people, they ask, so you ask someone you trust in his knowledge and religion, and you follow his statement. Yes.