In the midst of dualistic activities, that person sees everything is brahman. Cria karaka falam means action as a beginning, a middle and an end. In the midst of all this dualistic activity, the enlighten one sees one brahman only. It's one screen only in which the entire movie is being played out. Consciousness makes all experience possible. A griasta does not to withdraw from the world. That's the attitude of the gani, enlightened one who is engaged in the world.
Swami Sarvapriyananda talks on Verse 24 from Chapter 4 of the Bhagavad Gita.