। ॥ १६ ॥
In plain words
Saṃnyāsa is not something the body does, and no ochre robe confers it. The settled certainty — "I am not the body; I am the Ātman" — that is the mark of renunciation.
Close to the Sanskrit
Renunciation is surely not bodily practice, nor at all by means of the ochre garment. The certainty 'I am not the body, I am the Ātman' — that is the mark of renunciation.