The 8th day of Dhu al-Hijjah coincides with the Tarwiyah Day. The name of Tarwiyah refers to a narration of Ja'far al-Sadiq. He described the reason that there was any water at Mount Arafat in the 8th day of Dhu al-Hijjah. If pilgrims wanted to stay at Arafat, he would have prepared water from Mecca and carried it by themselves there. So they told each other drink enough. Finally, this day called Tarwiyah that means to quench thirst in the Arabic language.