It came in many reliable narrations that al-Abbas (peace be upon him) stormed the Euphrates River three times, one of them is on the eighth of Muharram, Aba al-Fadl al-Abbas (peace be upon him) was anguished to see the children and women of Ahl Al-Bayt distressed because of thirst. He decided then to go and bring water by force, accompanied by thirty horsemen and twenty of infantry, taking with then twenty bladders and all, attacked the siege made by the enemy army on the Euphrates River, Nafi' Bin Hilal Al-Muradi, one of the most faithful companions of Imam Al-Hussayn faced 'Amru Bin Al-Hajjaj Al-Zubaydi, one of the criminals of Karbala battle, and who has been entrusted to guard the Euphrates, so he said to Nafi':
What brought you here?
He said: We came to drink the water that you prohibited us
He replied: You can drink..
Nafi' then replied: I drink and Al-Hussayn and the rest of his companions are thirsty?
The criminal said: No way that they drink. We are here to prohibit them from the water!
But this, did not stop the heroes from the companions of Imam Al-Hussayn (peace be upon him), and mocked of his words, they broke into the Euphrates to fill their water skins. 'Amru Bin Al-Hajjaj railed in their faces with a detachment of his soldiers, but the hero of Karbala; Aba Al-Fadl (peace be upon them) and Nafi' Bin Hilal faced them and there was a battle between them, but no one was killed on both sides, and the companions of Imam lead by Aba Al-Fadl (peace be upon him) returned to the camps with their full water skins.
So, Abu Al-Fadl (peace be upon him) gave water to the members of Ahl Al-Bayt (peace be upon them) and quenched their thirst, and since he was given the title of "Saqqa' ", which is one of its most famous titles.