। ॥ २२२ ॥
In plain words
Vairāgya taken all the way to the end, and a hunger for the fruit that burns even hotter than that — know these two, exactly these, as what causes samādhāna, the mind's settling and staying.
Close to the Sanskrit
Dispassion that is utterly intense, and a longing for the fruit that is greater still — one should know that these two, precisely these, are the cause of samādhāna.