Fundamentals of Tasawwuf by Imam an-Nawawi
By Imam an-Nawawi
The basic rules of the way of Tasawwuf are five:
1. Having godfearingness privately and publicly,
2. Living according to the sunna in word and deed,
3. Indifference to whether others accept or reject one,
4. Satisfaction with Allah Most High in scarcity and plenty, and
5. Turning to Allah in happiness or affliction.