Umar ibn Sa'd

ʿUmar ibn Saʿd ibn Abi Waqqas (Arabic: عمر بن سعد; died 686) was a son of prophet Muhammad's companion, Sa'd ibn Abi Waqqas. He was born in Medina and later moved to ,and stayed until his death in, Kufa, which was founded by his father .

Umar ibn Sa'd
عمر بن سعد
Born	Madina, Hijaz, Arabia (present-day KSA)
Died	August c. 686 Kufa, Iraq
Cause of death	Killed and beheaded by Abd Allah ibn Kamil al-Shakiri, on the orders of Mukhtar al-Thaqafi.
Era	Umayyad Dynasty
Known for	Commander of Ibn Ziyad's army in the Battle of Karbala
Father	Sa'd ibn Abi Waqqas

He took orders from Ubaydullah 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 (Second Fitna).

His wife was the sister to Mukhtar al-Thaqafi, who ruled Iraq from 685 to 687, during the Second Fitna. He had five sons, of which Hafs ibn Umar ibn Sa'd ibn Abi Waqqas was present at the battle of Karbala.

He was the commander of the Yazidi army in the Battle of Karbala

Umar ibn Sa'd was killed by Abd Allah ibn Kamil al-Shakiri, on the orders of Mukhtar al-Thaqafi, for his involvement in the Battle of Karbala.^[1][2]