ऋणमोचनकर्तारः पितुः सन्ति सुतादयः ।बन्धमोचनकर्ता तु स्वस्मादन्यो न कश्चन ॥ ५३ ॥
In plain words
A son, or someone else, can pay off his father's debts. But no one at all can free you from your bondage except yourself.
Close to the Sanskrit
There are sons and others who can act to release a father from debt. But there is none other than oneself who can act to release [one] from bondage.