What was the Sa' in the time of Prophet Muhammad (saw)?
 Narrated Al-Ju'aid bin `Abdur-Rahman:                     As-Sa'ib bin Yazid said, "The Sa' at the time of the Prophet was equal to one Mudd plus one-third of a Mudd of your time, and then it was increased in the time of Caliph `Umar bin `Abdul `Aziz."