Bhagavad Gita Chapter 18.2
śrī-bhagavān uvāca
kāmyānāḿ karmaṇāḿ nyāsaḿ
sannyāsaḿ kavayo viduḥ
sarva-karma-phala-tyāgaḿ
prāhus tyāgaḿ vicakṣaṇāḥ
Translation
The Supreme Personality of Godhead said: The giving up of activities that are based on material desire is what great learned men call the renounced order of life [sannyasa]. And giving up the results of all activities is what the wise call renunciation [tyaga].