Bhagavad Gita 2.71

विहाय कामान्य: सर्वान्पुमंशरति नि:स्पृह: |
निर्ममो निरहङकार: स शांतिमधिगच्छति

Translation

That person, who gives up all material desires and lives free from a sense of greed, proprietorship, and egoism, attains perfect peace.