“There are four places of regular and fixed occurrence (in the history of) all Buddhas:--first, the place where they attained to perfect Wisdom (and became Buddha); second, the place where they turned the wheel of the Law;(20) third, the place where they preached the Law, discoursed of righteousness, and discomfited (the advocates of) erroneous doctrines; and fourth, the place where they came down, after going up to the Trayatrimsas heaven to preach the Law for the benefit of their mothers.”