The Prophet Muhammad (S): The Prophet (s) in his advice to his companion Abu Dharr, said, O Abu Dharr! When you are asked about something of which you have no knowledge, say, I do not know and you will be saved from its repercussions. And do not give verdicts about that which you do not know and you will be saved from the chastisement of Allah on the Day of Resurrection. Alamali,cheykhe Toussi