। ॥ १९ ॥
In plain words
First on the list: knowing clearly what lasts from what doesn't. Right after it: no longer craving the rewards of your actions, not in this life, not in the next.
Close to the Sanskrit
First, discrimination between the eternal and the non-eternal entity is reckoned [as the first qualification]. Dispassion for the enjoyment of fruit here and hereafter [comes] immediately after that.