Ameerul Momineen (a.s.) reports on the authority of the Holy Prophet (s.a.w.a.): “One of my own flesh and blood will be buried in the land of Khorasan. Allah will surely remove the sorrows of any sorrowful person who goes on pilgrimage to his (Imam Reza’s (a.s.)) shrine. Allah will surely forgive the sins of any sinful person who goes on pilgrimage to his shrine.”
Oyoon Akhbaar al-Reza (a.s.) chap 66 trad 14