What is the difference between bid'ah (religious innovation) and error?

Question:
This questioner says: What is the difference between bid'ah (religious innovation) and error? When do we say that so-and-so made a mistake, and when do we say that so-and-so innovated?

Answer:
Error, my brother, happens to every person. The Messenger (peace and blessings be upon him) said: Error happens to every human being, even to the scholars. Error occurs among them. If a judge exercises independent legal reasoning and is correct, he has two rewards; and if he exercises independent legal reasoning and makes a mistake, he has one reward. Error occurs among the children of Adam because they are not protected from it. They are not protected from error, but there is a difference between the one who, when he makes a mistake, recognizes his error and repents to Allah, and the one who persists in his error and does not accept advice. Yes.