। ॥ १०७ ॥
In plain words
When things go its way, it is happy; when they do not, it suffers. But pleasure and pain belong only to that ego - never to the Self, which is bliss itself, always.
Close to the Sanskrit
It is happy when circumstances are favorable, unhappy when otherwise. Pleasure and pain are the properties of that [ego], not of the ever-blissful Self.