Both immortality and Death are in the body. One meets with Death through ignorance and loss of judgement; while Immortality is gained by Truth.
अमृतं चैव मृत्युश्च द्वयं देहे प्रतिष्ठितम्। मृत्युमापद्यते मोहात् सत्येनापद्यतेऽमृतम्॥