Yogācārabhūmi Śāstra, Volume 34 (77)

Original text:若先未得殊胜善法。修习令得。名修故得。若先已得。令转现前。名修故习。若先已得。未令现前。但由修习彼种类法。当令现前。令转清净。鲜白生起。名修故净。若有失念。染法现行。修善法力。令不忍受。断除变吐。名修故遣。

Explanation: If one has not previously attained superior wholesome dharmas, and attains them through cultivation, this is called attainment through cultivation. If one has previously attained wholesome dharmas, and through cultivation brings them forth to manifest, this is called habituation through cultivation. If one has previously attained wholesome dharmas but has not brought them forth to manifest, yet through cultivating dharmas of that same kind, brings them forth to manifest and makes them even purer, arising fresh and immaculately white, this is called purification through cultivation. If, due to loss of mindfulness, defiled dharmas arise, then through the power of cultivating wholesome dharmas, the mind cannot tolerate those defiled dharmas, and one severs and expels them — this is called elimination through cultivation.