Lady Zeinab(s) was an important person in the event of Ashura, when Imam Husayn(a), his friends and family were martyred at the hands of the tyrant of the time Yazid, son of Muawiya.
Not only did she have to look after the children left behind in the camp of Imam Husayn(a), she was an inspiration to the ladies of Bani Hashem who were anxiously witnessing the martyrdom of their sons, husbands and fathers on the battlefield.
All the men were on the battlefield except for Imam Sajjad(a) the son of Imam Husayn(a)who due to illness could not go to fight against those who assaulted their camp. Lady Zeinab looked after the Imam as he was her own son.
In the Shi‘a tradition, Lady Zeinab(s) is known as the nurse of Karbala as she took care of the ill and wounded during and after the event of Ashura with selfless courage. In Iran, her birthday is marked as a special day dedicated to all nurses, known as Nursing Day.
For Muslims, Lady Zeinab(s) is a great role model.