Bhagavad Gita 6.10
योगी युञ्जीत सततमात्मानं रहसि स्थितः।
एकाकी यतचित्तात्मा निराशीरपरिग्रहः।।6.10।।
Yogi yunjita satatamatmanam rahasi sthitah
Ekaki yatachittatma nirashiraparigrahah
Simple meaning, written by AIThe yogi should constantly unite the self, staying alone in a secluded place, with mind and self controlled and free from hope and possessions.