UtshovBhagavad Gita 14.11
सर्वद्वारेषु देहेऽस्मिन्प्रकाश उपजायते।ज्ञानं यदा तदा विद्याद्विवृद्धं सत्त्वमित्युत।।14.11।।
Sarvadvareshu dehesminprakasha upajayate, gyanam yada tada vidyadvivriddham sattvamityuta
Simple meaning, written by AIWhen the light of knowledge arises in all the openings of the body, that increased knowledge is called Sattva.