। ॥ ५३८ ॥
In plain words
A child at play forgets hunger, forgets every ache in the body, lost entirely in the game. The wise one delights in exactly that way - with no 'mine' left, no 'I' left, simply happy.
Close to the Sanskrit
Having forgotten hunger and bodily discomfort, a child plays with objects; just so the wise man delights, free of 'mine', free of 'I', happy.