Assalamu alaykum everyone, I have a question please if some of you can help me I would be grateful. If someone wants to share specific knowledge about Islam, and teach other people about it. Any kind of Islamic knowledge... is it a must for the person teaching or sharing the knowledge to be fully applying that knowledge in real life, like, I know it is forbidden to teach someone something that you are not doing it yourself, and it is considered a major sin. However, what if that person who it teaching something specific about Islam and is currently trying to apply it in his or her real life, like they take it into consideration, but sometimes they might not be applying it fully. In another word, is it a must to be a certificated scholar of knowledge of Islam, or to be a real "multazim" to be able to teach some specific knowledge, not all of it. (of course the knowledge is taken from other great scholars, then be transmitted to the people being taught in a different way according to their age and the creativeness of the person teaching) So what is your opinion about this, and if you have any opinions from shaikhs please share them