Verse 4

सुरघुरुवाच ।एतन्मे ब्रूहि भगवन्सर्वसंकल्पवर्जितम् ।परमोपशमं श्रेयः समाधिर्हि किमुच्यते

In plain words

Suraghu said: Tell me this, blessed one: that which is free of every saṃkalpa, the highest upaśama, the good -- what indeed is it that is called samādhi?