Chapter V Sloka 24

yae=Nt>suoae=NtraramStwaNtJyaeRitrev y>, 
s yaegI äüinvaR[< äü-Utae=ixgCDit.

yo'nta×sukho'ntar˜r˜mas
tath˜ntarjyotireva ya× | 
sa yogŸ brahmanirv˜õaÕ 
brahmabh¨to'dhigacchati ( 5|24)||

He who is happy within, who rejoices within,  who is illuminated within, that Yogi attains absolute freedom or Moksha, himself becoming Brahman.

Commentary:

Within means 'in the Self.'
He attains Brahmanirvanam or liberation, liberation while living. He becomes a jivanmukta.