Ibn Qayyim al-Jawziyyah (rahimahullaah) – said:

“There are six stages to knowledge:

Firstly: Asking questions in a good manner.
Secondly: Remaining quiet and listening attentively.
Thirdly: Understanding well.
Fourthly: Memorising.
Fifthly: Teaching.
Sixthly– and it is its fruit: Acting upon the knowledge and keeping to its limits.”