Verse 12

ये स्वभावा महासत्या नृणां सात्त्विकजन्मनाम् ।तान्भजन्पुरुषो याति पाश्चात्योदारजन्मताम्

In plain words

Those deeply genuine natures that belong to men of sāttvika birth -- a person who cultivates them attains a noble later birth.