The first ten days and nights of the holy month of Muharram have been allocated and named after the names of Ahl al-Bayt (peace be upon them) and the great personalities of the timeless incident of At-Taf from the companions of the Imam (peace be upon them), who gave their lives for the sake of Allah and in support to Imam al-Hussayn (peace be upon him), and who embodied the noblest and most honorable of the principles and their souls ascended to the peak of human perfection and their names glowed on the forehead of eternity shimmering through generations.
Among them, the positions of the cub of Haidar and the Standard-bearer of Imam al-Hussayn (peace be upon them) on the day of At-Taf; Aba al-Fadl al-Abbas (peace be upon him), whose positions were oceans of lessons, as he is the king of realm of fulfillment and altruism.
Hence, the 7th day of Muharram is devoted to this brave hero, to be the focus of the speech of the preachers in addition to the condolences processions, recalling al-Abbas (peace be upon him), his heroism, positions and selflessness with his brother Imam al-Hussayn (peace be upon him), refusing to drink water while he was at the al-'Alqami River because his brother al-Hussayn (peace be upon him) was thirty, even though both of them and all the members of their camp did not drink water since more than three days. This is a custom was established since hundreds of years.
The choice of the seventh day of Muharram to be allocated to Aba al-Fadl al-Abbas (peace be upon him) is based on the narrations stating that on the seventh 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.