On the authority of Abu Hurairah (رضى الله عنه), that a man said to the Prophet (صلى الله عليه وسلم): 'Advise me.' The Prophet said, "Don't get angry." The man repeated his request several times and each time the Prophet (صلى الله عليه وسلم) said, "Don't get angry."
Q: How should a student advise his teacher?
A: "It should be the opposite way. The teacher is the one who should advise the student since he is more aware and understanding of the affairs. So the student should continue to take knowledge from his teacher for perhaps something may appear to be an error