There were originally eight principles formulated by the Central Asian Sufi teacher Abdul Khaliq Gajadwani (died 1179), the last three of the eleven being added later by Baha-ud-Din Naqshband Bukhari (1318–1389), founder of the Naqshbandi Order.
They are carried out under individual tuition, expertly prescribed, monitored for changes, and carefully adjusted by a teacher, rather than being automatically performed.
[2] The principles have been brought to the attention of contemporary Western audiences through the works of the writers Idries Shah,[2][4] John G. Bennett,[5] Omar Ali-Shah[6] and J. Spencer Trimingham.
[7] The exercises were an important aspect of Omar Ali-Shah's work with groups in the modern Naqshbandi tradition in the West.
For instance, one of Ali-Shah's books of edited transcripts, The Rules or Secrets of the Naqshbandi Order, was devoted to this subject.