6:2  

यं संन्यासमिति प्राहुर्योगं तं विद्धि पाण्डव ।
न ह्यसंन्यस्तसंकल्पो योगी भवति कश्चन ॥६- २॥

yaM saMnyaasamiti praahuryogaM taM widdhi paaNDawa ।

na hyasaMnyastasaMkalpo yogii bhawati kashchana ॥६- २॥

Source: Automatic ITRANS Transliteration

Know that yoga called renunciation, O son of Pandu,
Not anyone becomes a yogi without renouncing desire.

Source: Milind S. Pandit

O Arjuna, know that to be the Karma-yoga which they call Samnyasa. No one becomes a Karma-yogi who has not renounced the selfish motive behind an action. (See also 5.01, 5.05, 6.01, and 18.02)

Source: The Bhagavad-Gita: The Sacred Song

What is called renunciation is the same as yoga, or linking oneself with the Supreme, for no one can become a yogi unless he renounces the desire for sense gratification.

Source: Bhagavad Gita As It Is