sentences:  Krishnamacharya later related an oral "translation" of the text to his students, such as K. Pattabhi Jois and B. K. S. Iyengar.Jois claimed to have used that as the basis of his Ashtanga Vinyasa Yoga system.The original text reportedly was not preserved, and its historicity and existence has been questioned; Krishnamacharya also spoke of a "Yoga Rahasya" which similarly has never been seen by anyone else.