प्रारब्धकर्मवेगेन जीवन्मुक्तो यदा भवेत् ।किञ्चित्कालमनारब्धकर्मबन्धस्य संक्षये ॥ ५२ ॥
In plain words
When a sage remains liberated in life, carried forward by the momentum of past karma already in action, until the remaining uncommenced karma is completely exhausted...
Close to the Sanskrit
When a living liberated sage exists through the momentum of commenced karma, upon the exhaustion of the bondage of uncommenced karma for some time...