Ghadir, the heavenly celebration
Imam Reza (P.B.U.H.) said:
My father (P.B.U.H.) quoted from his father (Imam Sadiq (P.B.U.H.)) who said:
“The day of Ghadir is more famous in the sky (heaven) than on the earth.”. [1]
References:
[1]. Mesbah-ul-Mujtahed, p. 737