Salim bin Abi al-Ja'd narrated: the Prophet (peace and blessings be upon him) was shown (them) in a dream, and he (peace and blessings be upon him) saw Sayyiduna Ja'far (may Allah be pleased with him) as an angel with two wings, smeared with blood, and Sayyiduna Zayd (may Allah be pleased with him) was facing him on a throne.
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1455