। ॥ ४३० ॥
In plain words
His mind is absorbed in Brahman, yet he is awake, free of the usual characteristics of waking. His awareness carries no latent impressions. That is the one called liberated while still alive.
Close to the Sanskrit
He who remains awake though his intellect is absorbed, who is devoid of the characteristics of waking, and whose awareness is free of latent impressions, is regarded as liberated while living.