Source: Zaad Al-Mi'aad. Pg. # 257 - 258.
The author (i.e. Al-Majlisi II) says: It becomes clear from the narration of this great Sheikh the merits of this day and the occurrence of this blessed event in it, such that it has been narrated many narrations about it and it was famous among Shia in those old times. And to my knowledge there has not been narrated anything in contradiction to it and the consensus of the Sunni historians is not acceptable as contradiction against reliable narrations.
