"If he thinks, I'll support him, he is dreaming," Hazare said about Kejriwal.
He added that he never asked anyone to vote for a particular person or a party as he was not interested in politics.
Addressing a press conference here, Hazare said: "My stand on Kejriwal changed with time. I will say why when the time comes. If I say anything now, it will create more trouble."
Hazare had earlier said that he would support Kejriwal and his Aam Aadmi Party if it fielded honest candidates. However, last week Hazare said that Kejriwal had become "greedy" for power and he would not vote for him.