Chapter II sloka 55

ïI-gvanuvac,
àjhait yda kamaNsvaRNpawR mnaegtan!,
AaTmNyevaTmna tuò> iSwtà}StdaeCyte.

þreebhagav˜nuv˜ca |
prajah˜ti yad˜ k˜m˜n
sarv˜np˜rtha manogat˜n |
˜tmanyev˜tman˜ tuee÷a× 
sthitaprajñastadocyate ( 2|55)||

The blessed Lord said:
2.55. When a man completely casts off, O Arjuna, all the desires of the mind and is satisfied in the Self by the Self, then is he said to be one of steady wisdom.