समाधिसुप्त्योर्ज्ञानं चाज्ञानं सुप्त्यात्र नेष्यते ।सविकल्पो निर्विकल्पः समाधी द्वाविमौ हृदि ॥ ८२७ ॥
In plain words
In samadhi there is luminous awareness, whereas in deep sleep there is only a blank veiling of ignorance—though true awareness is not absent in deep sleep. Thus, savikalpa and nirvikalpa: these two states of absorption are held within the heart.
Close to the Sanskrit
Knowledge in samadhi and ignorance in deep sleep—ignorance is not desired here by deep sleep; savikalpa and nirvikalpa, these two samadhis are in the heart.