What was the age of As-Sa'ib bin Yazid when he was made to perform Hajj with the Prophet Muhammad (saw)?
 Narrated As-Sa'ib bin Yazid:                     (While in the company of my parents) I was made to perform Hajj with Allah's Apostle and I was a seven-year-old boy then. (Fath-ul-Bari, p.443, Vol.4)