Sahih Bukhari Volume 5, Book 57, Hadith Number 58.

Narated By Ash-Sha’bi : Whenever Ibn ‘Umar greeted Ibn Jafar, he used to say: “As-salamu-‘Alaika (i.e. Peace be on you) O son of Dhu-l-Janahain (son of the two-winged person).”