Trisvabhāva (Sanskrit; Chinese: 三性 or 三自性) or the three natures, is one of the key doctrines of the Yogācāra school of Buddhism. The concept of the three natures describes the three qualities that all phenomena possess, and can be found in several Mahayana sutras, such as Samdhinirmocana Sūtra. The three natures are: Parikalpita-svabhava (the imaginary nature of things), Paratantra-svabhava (the dependent nature of things) and Parinishpanna-svabhava (the consummate or perfected nature of things).