大般涅槃經義記 6.102

6.102

第四約就六度明得，第五約就三十七品無邊之身以明有得，第六約就空定說得，第七約就一乘辯得，第八約就方等經典宣說有得，文皆三句，類上可知。

Fourth, attainment is explained in terms of the six perfections; fifth, attainment is explained in terms of the boundless body of the thirty-seven factors [of awakening]; sixth, attainment is spoken of in terms of emptiness samādhi; seventh, attainment is analyzed in terms of the one vehicle; eighth, attainment is declared in terms of the vaipulya scriptures. The texts all contain three clauses, which can be known by analogy with the above.