In 2009, on a visit to Aquila, Italy, Benedict left at Celestine's tomb the pallium, a stole-like vestment that signifies episcopal authority, that Benedict had worn for his installation as pope.

CNN: Benedict a pope aware of his flaws

He will be given a lamb's wool shawl, known as the pallium, to represent his role as "the good shepherd, " who tends responsibly to his flock, and receive the symbolic papal ring, the Fisherman's Ring, to represent his role of spreading the gospel.

CNN: March 19, 2013 -- Updated 0829 GMT (1629 HKT)