। ॥ ९५६ ॥
In plain words
When the mind rests steadily in the prolonged experience of inner bliss, attaining complete oneness with the Self, this condition is designated as the deep-sleep-in-dream state.
Close to the Sanskrit
In the modification, in the abiding in the long-experienced inner bliss-experience, identity with the Self who goes, this deep sleep-dream is declared.