W.P.S: Mohammad bin Ahmad bin Hasan bin Walid narrated from Mohammad bin Hasan Al-Saffar, from Ahmad bin Mohammad bin Isa. from Ahmad bin Mohammad bin Abi Nasr Al-Bazanti, who said:
I read the following in the letter of ABUL HASAN ALI BIN MUSA AL-REDHA (ASWS) “Tell my Shia that the reward of my ZIYARAT (visit) in ALLAH (SWT)’s eyes is equal to one thousand Hajj.”
So I asked ABI JAAFAR (ASWS), his son (the Ninth Imam), “One Thousand!?”
He replied, “I swear to ALLAH (SWT), the reward is one million Hajj if you go for his Ziyarat knowing his true status.”
(Ref :Amaali of Sadouq 61,104,O’younAkhbar Al Redha 1:257,Kamil Al-Ziyarah 306, Behar Al Anwar 29:198)