Conquest of self gives mastery over the whole world. Conquest of the mind leads to the conquest of the self. Works on yoga portray the various age-old techniques for controlling the mind. Pañca-dhāraṇās, five kinds of fixing the mind on prescribed subtle principles, is one such method described in a well-known work on Haṭhayoga viz., Gheraṇḍa Saṁhitā.
The fire principle is situated at the navel, in the form of a red effulgent triangle. Its presiding deity is Rudra. Fixing the prāṇa along with the mind on this fire principle at the navel for a period of five ghaṭis (i.e., 2 hours) is known as ‘āgneyī-dhāraṇā.’ Destruction of the fear of death is the result achieved.