In the "Tattvasamgraha tantra" (c 7th century), one of the most important tantras of the Buddhist Yoga Tantra Class, the ankusha figures in the visualization of one of the retinue. This tantra explains the process of the visualization of the Vajradhatu Mandala, which is one of the most visually stylized of Buddhist mandalas. The Ankusha is the symbolic attribute for the visualization of the Bodhisattva Vajraraja, an emanation within the retinue of Vajradhatu. This visualization is treated in Tachikawa (c2000: p. 237).