As-salaamu'alaykum,
Amir al-Mu'mineen 'Ali (radiyAllahu anh) said:
“Among the rights of the scholar is that you should not ask too many questions of him, you should be content with his answer, you should not annoy him when he gets tired, you should not grab his garment if he wants to leave, you should not disclose his secret, you should not backbite anyone in his presence, you should not seek out his faults, and if he makes a mistake you should accept his explanation. You should respect him for the sake of Allah as long as he is obeying the commands of Allah. You should not sit in front of him, and if he needs something, you should be the first to serve him.”
(Hiqbah min at-Tareekh, p. 224)
Amir al-Mu'mineen 'Ali (radiyAllahu anh) said:
“Among the rights of the scholar is that you should not ask too many questions of him, you should be content with his answer, you should not annoy him when he gets tired, you should not grab his garment if he wants to leave, you should not disclose his secret, you should not backbite anyone in his presence, you should not seek out his faults, and if he makes a mistake you should accept his explanation. You should respect him for the sake of Allah as long as he is obeying the commands of Allah. You should not sit in front of him, and if he needs something, you should be the first to serve him.”
(Hiqbah min at-Tareekh, p. 224)