كتاب الأدب : Hadeeth No:5823 : 'Abdullah bin Mughaffal Al-Muzani: The Prophet forbade the throwing of stones (with the thumb and the index or middle finger), and said "It neither hunts a game nor kills (or hurts) an enemy, but it gouges out an eye or breaks a tooth."...

كتاب كفارات الأيمان : Hadeeth No:6288 : 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."...