'Vulnus Achilleo quae quondam fecerat hosti,
Vulneris auxilium Pelias hasta tulit.'
Remed. Amor. 47.
See also Met. xii. 112; xiii. 171; Ex Ponto, ii. 2. 26; Propertius, Eleg.
ii. 1. 65 (_or_ 63). Or he may have taken it from Dante, Inferno, xxxi. 5;
or from Hyginus, Fab. 101. Cf. Shak. 2 Hen. VI., v. i. 100.