Chapter 5 · The Yoga of Renunciation · Krishna said
Bhagavad Gita 5.6 — Action leads to renunciation
संन्यासस्तु महाबाहो दुःखमाप्तुमयोगतः। योगयुक्तो मुनिर्ब्रह्म नचिरेणाधिगच्छति ॥
saṃnyāsastu mahābāho duḥkhamāptumayogataḥ | yogayukto munirbrahma nacireṇādhigacchati ||
Meaning
Without karma yoga, true renunciation is hard to achieve and brings pain. But the sage devoted to karma yoga soon reaches Brahman.