tataha padam tatparimaargatavyam yasmingataa na nivartanti bhooyaha |
tameva chaadyam purusham prapadye yataha pravrittihi prasritaa puraanee || 4 ||

Then that goal should be sought, having attained which, none return again. I seek refuge in that original Purusha from which has sprung this ancient sprout.
tataha : then
padam : goal
tat : that
parimaargatavyam : sought
yasmin : by which
gataaha : having attained
na : not
nivartanti : return
bhooyaha : again
tam : that
eva : only
cha : and
aadyam : original
purusham : Purusha
prapadye : seek refuge
yataha : from whom
pravrittihi : sprung
prasritaa : sprout
puraanee : ancient
A family of tourists is driving around in a new city without the help of a map or a GPS device. A left turn here, a right turn there, and they are utterly lost. The wife asks the husband to stop the car and ask a shopkeeper for directions. The husband says no, and continues driving in circles for an hour. The wife yells at the husband who finally agrees to ask a shopkeeper for directions. This is an all too common occurrence. Unless the ego is surrendered, even material knowledge is far from reach.
Shri Krishna says : All of you are thoroughly lost in the cycle of action and reaction, the tree of samsaara. So take refuge in me. I am the original Purusha, the root from which this tree of samsaara has sprung up. I have created this universe like a magician creates his illusion. Don’t get lost in the branches of the tree which are fueled by the three gunas of Prakriti. Come straight to the source, which is me. I am giving you a hand to save you from drowning in samsaara. Hold it tightly and do not let it go. This is the meaning of the word prapatti, which had also come up in the seventh chapter.
This prapatti, this seeking of refuge in Ishvara will help us cultivate dispassion towards samsaara. But this dispassion will not come overnight, it will come gradually. First, karma yoga has to be practised as prescribed by Shri Krishna. We should reduce selfish actions, increase selfless actions, then drop our attitude of doership. We cannot have it both ways – we cannot love Ishvara and love the material world at the same time. If we cannot control our mind and senses, we have yet to cultivate real devotion for Ishvara. Devotion, coupled with dispassion towards the world, will result in our liberation, the goal from which we will not have to return back to the material world.