When Ja'far (may Allah be pleased with him) came from Abyssinia, the Prophet (peace and blessings be upon him) embraced him and kissed him between his eyes, and said: "I do not know which of the two makes me happier: the conquest of Khaybar or the arrival of Ja'far."
This is mursal.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13580