। ॥ ३४२ ॥
In plain words
To bring the mendicant, who has already heard the teaching, to the full realization of being the Self of all, this very scripture - the one that says 'tranquil, self-controlled...' - lays down samādhi as the next step.
Close to the Sanskrit
For the accomplishment of universal Selfhood in the renunciant who has performed the practice of [scriptural] hearing, this śruti - 'tranquil, self-controlled...' - prescribes samādhi.