It is narrated from Sayyiduna Abu Juhayfah (may Allah be pleased with him) that when Sayyiduna Ja'far (may Allah be pleased with him) returned from the land of Abyssinia to the Messenger of Allah (peace and blessings be upon him), he kissed the Messenger of Allah (peace and blessings be upon him) between his eyes. Then he (peace and blessings be upon him) said: "I do not know whether I am happier at the arrival of Ja'far or at the conquest of Khaybar."
Hadith Referenceالمعجم الكبير للطبراني / باب الواو / 18464