SHAFAQNA – It is narrated from Imam Al-Kazim (AS) who said: The least of rewards which is given to the pilgrims of Imam Hussain (AS) on the edges (waterfront) of Forat is that, all of their past and present sins will be forgiven, on the condition that the pilgrims know about the rightful position of Imam Hussain (AS), as well as his sanctity, and his Wilayah [1].
[1] Mostadrakul Wasael, Vol. 10, Page 236.