Volume 8, Book 79, Number 703:
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.”