*The Salaf used to grieve the death of one of their Sheiks.
*The Sheik would appoint one of his students to take over the lessons after him.
*One should not be amazed by the large numbers who attend lessons of a deviated sinner. It is mentioned in the book of 'Ajaa'ib al-A'thaar' that a certain Sheik who was learned in matters of Fiqh, but was an immoral poet had over 300 students attending his lessons.
*One should expel from the sessions of knowledge a person who spreads evil, in order to safeguard the rest of the students from the evil of that individual.
*If a lesson is not valued or respected by a student, they will not benefit from it.
