If he sees knowledge in his dream, it indicates his conversion, because God Almighty says : ~ And it is knowledge for the hour, so do not rest with it .~ Knowledge of a woman is a husband . And the knowledge that is attributed to the ascetic world, if it is red then it is a relief and pleasure . And if it is black, then it is seen from it . And black flags were said to indicate general rain, white flags indicate rain, and red flags were war .