Shalom, Its like when your lover sends you a letter, you doubt the love because the letter is not about the postman !!!! Why would it be about the postman in the first place. If you are truly in love, read the words in that letter and try to understand your lover instead of focusing on the postman or the postal service. PEACE be on you, may God be pleased with you ------------------------------------------------------------- Student of Allah Was it the love letter sent through a post man!! OR was it a message/guidance/knowledge sent through a teacher? Would the character of that teacher be completely irrelevant? Do we draw no line in distinguishing between the Post man and/or the Teacher? Especially, if that teacher wasn't only teaching the book but was also providing practical demonstrations also for the students to facilitate their learning and for their own practice. Calling that post man makes the case very simple but looking in the context of (1) Teacher + (2) Practical Guide/Demonstrator/Trainer would cause the trouble which people of today's age are going through because it is hard to find reliable info on that topic. But, the question is if we cannot get to know the truth, shall we ignore the fact and reality and provide comfort to ourselves by calling him post man!!