four kinds of birth in the six destinies
Buddhist technical term referring to the four modes of birth (from womb, egg, moisture, or transformation) across the six realms of existence. Rare in everyday Japanese; used in Buddhist doctrinal contexts.
The teaching of the four kinds of birth in the six destinies is part of Buddhist thought on transmigration.
Compound of 六道 (six realms) and 四生 (four kinds of birth), both standard Buddhist terms. The exact historical derivation is uncertain, but the combination is a doctrinal concept in Buddhism.