It is narrated from Sayyiduna Yazid bin Na'amah al-Dabbi (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When a man takes another man as a brother, let him ask him his name, his father's name and which tribe he belongs to, for that is a better means of strengthening affection."
Hadith Referenceالمعجم الكبير للطبراني / باب الياء / 18857