瑜伽師地論略纂 11.146

11.146

論解二世樂中有九者，「第四、說淨戒難」者，謂外道執自戒為淨戒；第五、見亦然；八、軌則，如〈聲聞地〉。　清淨行語有二十者，謂前〈力種性品〉有二：一種十五相、一五種相，合為二十。彼如此云。

Where the treatise explains that [speech bringing] bliss in both lives has nine aspects: 'the fourth, explaining the difficulty of pure morality', refers to non-Buddhists who grasp their own morality as pure morality; the fifth, view, is also like this; the eighth, deportment, is as in the Śrāvakabhūmi. / That speech of pure conduct has twenty aspects refers to two sets in the previous 'Chapter on Powers and Gotra': one with fifteen marks and one with five marks, combined to make twenty. That text speaks thus.