Bhagavad Gita · 18.2

श्रीभगवानुवाचकाम्यानां कर्मणां न्यासं सन्न्यासं कवयो विदुः।सर्वकर्मफलत्यागं प्राहुस्त्यागं विचक्षणाः॥

śhrī bhagavān uvācha kāmyānāṁ karmaṇāṁ nyāsaṁ sannyāsaṁ kavayo viduḥ sarva-karma-phala-tyāgaṁ prāhus tyāgaṁ vichakṣhaṇāḥ

The Supreme Lord said: The sages understand sannyasa to be the giving up of actions motivated by desire. The wise declare tyaga to be the abandonment of the fruits of all actions.

— Bhagavad Gita 18.2

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)