瑜伽論記 8.306

8.306

習種姓者，若依勝軍，初從福分善根漸漸修習成於道分，展轉修之乃至熏成無漏種子，名習種性。

Regarding the 'cultivated gotra': according to Jayasena, first, from the wholesome roots conducive to merit, one gradually cultivates to form the factors of the path, and successively cultivates them until perfuming forms taintless seeds, which are called the cultivated gotra.