Umar ibn Sa'ad
‘Umar ibn Sa‘ad was a son of Muhammad's companion Sa'ad ibn Abi Waqqas. He was born in Madinah and later moved to Kufa which was built by his father and stayed there until his death.
He was a clergyman, and took orders from Ibn Ziyad. He was one of the leaders of the troops who killed Husayn ibn Ali in the Battle of Karbala in 680, the first major battle of the Second Islamic Civil War.
His wife was a sister of Mukhtar al-Thaqafi, who ruled Iraq from 685 to 687, during the Second Fitna. He also had a son, Hafs Bin Amar ibn Saad bin Abi Waqqas, who was according to history killed by his own mother during the government of Mukhtar al-Thaqafi.
Umar ibn Sa‘ad was killed by Abu Amra Kaysan, on the orders of Mukhtar al-Thaqafi, for his involvement in the Battle of Karbala.
