The First Foundation:
Seeking knowledge – which a Muslim needs in order to establish what is binding on him from worship of his Lord – is an obligation that is compulsory on him. As for what exceeds those limits, then acquiring knowledge of that falls under the collective obligations (fard kifaayah), and it is something recommended and extra for the student of knowledge.
The proof for this foundation is what has been reported from the Prophet (sallAllaahu ‘alayhi wa sallam) that he said: “Seeking knowledge is an obligation upon every Muslim.”
Another proof is the fact that this Religion is founded upon two basic principles, which are:
1. We don’t worship anyone except Allaah, and
2. We don’t perform worship except with what Allaah has legislated.