In the Mahayana world view, there are also pure lands which lie outside this continuum and are created by the Buddhas upon attaining enlightenment. Rebirth in the pure land of Amitabha is seen as an assurance of Buddhahood, for once reborn there, beings do not fall back into cyclical existence unless they choose to do so to save other beings, the goal of Buddhism being the obtainment of enlightenment and freeing oneself and others from the birth–death cycle. The Tibetan word "Bardo" means literally "intermediate state". In Sanskrit the concept has the name "antarabhāva". The lists below are classified from highest to lowest of the heavenly worlds. Brahmāloka  Here the denizens are Brahmās, and the ruler is Mahābrahmā  After developing the four Brahmavihāras, King Makhādeva rebirths here after death. The monk Tissa and Brāhmana Jānussoni were also reborn here. The lifespan of a Brahmās is not stated but is not eternal. Parinirmita-vaśavartin (Pali: Paranimmita-vasavatti)  The heaven of devas "with power over (others') creations". These devas do not create pleasing forms that they desire for themselves, but their desires are fulfilled by the acts of other devas who wish for their favor. The ruler of this world is called Vaśavartin (Pāli: Vasavatti), who has longer life, greater beauty, more power and happiness and more delightful sense-objects than the other devas of his world. This world is also the home of the devaputra (being of divine race) called Māra, who endeavors to keep all beings of the Kāmadhātu in the grip of sensual pleasures. Māra is also sometimes called Vaśavartin, but in general these two dwellers in this world are kept distinct. The beings of this world are tall and live for 9,216,000,000 years (Sarvāstivāda tradition). Nirmāṇarati (Pali: Nimmānaratī)  The world of devas "delighting in their creations". The devas of this world are capable of making any appearance to please themselves. The lord of this world is called Sunirmita (Pāli Sunimmita); his wife is the rebirth of Visākhā, formerly the chief upāsikā (female lay devotee) of the Buddha.