Riyaazat and Mujaahidah have two fundamentals (Rukn):
Mujaahidah Ijmaalee
has four fundamentals as stated above. In these acts (viz., reduction in food, speech, sleep and association) it is necessary to adopt moderation in accordance with the instruction of a Shaikh-e- Kaamil (a spiritual guide qualified in this field). Neither is there to be excessive indulgence in these acts because the result will be indolence and negligence, nor should there be excessive reduction, for the consequence will be physical weakness.The second Rukn viz. Mujaahidah Tafseelee, is divided into two classes: