Srimad Bhagavatam — Ekadasha Skandha, Shloka 19
Guṇa-vibhāga: The Three Modes and the Path Beyond Them
एधमाने गुणे सत्त्वे देवानां बलमेधते । असुराणां च रजसि तमस्युद्धव रक्षसाम् ॥ १९ ॥
edhamāne guṇe sattve devānāṁ balam edhate asurāṇāṁ ca rajasi tamasy uddhava rakṣasām
随着善良属性（Sattva）的增长，半神人的力量也随之增加。当激情属性（Rajas）增加时，阿修罗变得强大。而在愚昧属性（Tamas）兴起时，噢 乌达瓦，罗刹恶鬼的力量便会增强。
FAQs
This verse explains that when goodness grows, divine qualities and demigod-like strength increase; when passion dominates, asuric power rises; and when ignorance expands, destructive rākṣasic tendencies become prominent.
Kṛṣṇa instructs Uddhava on how the guṇas shape behavior and power in the world, helping him understand social and inner dynamics and how to orient life toward transcendence beyond material modes.
Increase sattva through clean habits, truthful living, and spiritual practice; recognize rajas as restless ambition; avoid tamas such as intoxication, laziness, and cruelty—so one’s life moves toward clarity, devotion, and self-control.