Having heard about the martyrdom of her sons, Umm ul-Banin asked for the healthiness and soundness of Imam Hussien (peace be upon him) and did not ask anything about her sons, because she considered her sons a sacrifice for Imam Hussein (peace be upon him), this issue represent Umm-um Banin's nobleness and her obedience to Wilayat (guardianship).
source : erfan.ir