The etiquettes of students with scholars
Messenger of Allah (ص) said: "A loving glance at the face of a learned [`alim] is an act of worship [ibada]"
If you are a student, then you should observe the praiseworthy rules of a student’s dealing with a learned man. The rules are:
1. To greet the learned man first
2. To speak little in his presence
3. Not to speak much so long as his teacher does not ask him anything
4. Not to ask him questions before receiving permission
5. Not to say, by way of objection to his words, ‘so and so said contrary to what you have said’,
6. Not to argue against his opinions in such as way as to show that you know the truth more than your teacher
7. Not to argue against companions in meetings
8. Not to look around but to sit downcast eyes, quietly and courteously as if you were engaged in ritual prayer
9. Not to speak to him much when he is tired
10.To stand up in order to show respect for him when he stands
11.Not to follow him speaking and questioning and asking him questions along streets until he reaches home
12.Not to imagine evil of him in regard to those of his actions that may appear abominable. The teacher knows better concerning his secret affairs.
13.When some actions of the teacher appear abominable, the student should recollect the complaint made by the prophet Musa and Al-Khidr
From Imam Ghazali's Bidaya wa Hidaya (begining of guidance)