大事(因緣)
Từ Điển Thuật Ngữ Phật Học Hán Ngữ
For the sake of a great cause, or because of a great matter―the Buddha appeared, i.e. for changing illusion into enlightenment. The Lotus interprets it as enlightenment; the Nirvana as the Buddha-nature; the 無量壽經 as the joy of Paradise.