عبيد الله بن زياد
Shemr was one of the tribesman of Umm ul-Banin. He was given a guarantee of safe conduct from Ubayd Allah ibn Ziyad for children of Umm ul-Banin in Tasu'a. He asked Abbas ibn Ali and his brothers to abandon Husayn ibn Ali and obey Yazid. Abbas didn't accept his safe conduct and answered him: "God curse you and your safe conduct! You give us safe conduct and you do not give safe conduct to the grandson of the Prophet of God? And you are asking us to enter the obedience of the cursed people and those who are children of cursed people?"