Verse 14.5
सत्त्वं रजस्तम इति गुणाः प्रकृतिसंभवाः । निबध्नन्ति महाबाहो देहे देहिनमव्ययम् ॥ १४.५ ॥
हे अर्जुन ! सत्वगुण, रजोगुण, और तमोगुण —-ये प्रकृति से उत्पन्न तीनों गुण अविनाशी जीवात्मा को शरीर में बांधते हैं|
Arjuna, that NATURE is made of three parts, namely: SATTVA (the light representing goodness); RAJAS (fire representing passion), and TAMAS (darkness representing evil). These bind down and limit the human mortal bodies from reaching true perfection and achieving the state of infinite Spirit and immortality.