SB 2.8.19
tattvanam parisankhyanam
laksanam hetu-laksanam
purusaradhana-vidhir
yogasyadhyatmikasya ca
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Kindly explain all about the elementary principles of creation, the number of such elementary principles, their causes, and their development, and also the process of devotional service and the method of mystic powers.