Patroklos wears the armor of Achilles, but he leaves behind that hero’s meliē ‘ash spear’ I.16.143. Only Achilles can wield that weapon, I.16.140–144. The symbolism of this spear corresponds to the myth of the bronze generation of heroes in Hesiod Works and Days 143–151, who were born of ash trees and were made of bronze, just as the shaft of the spear of Achilles is made from an ash tree while the tip is made of bronze. By contrast with the immortalizing armor that Achilles receives from his immortal mother Thetis, he receives the ash spear from his mortal father Peleus. For more on the symbolism of the hero’s ash spear, I recommend Shannon 1975.