It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "I saw Sayyiduna Ja'far bin Abi Talib as an angel, flying in Paradise, possessing two wings with which he flies wherever he wishes, the front feathers of his wings cut and stained with blood."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1454