"Your father was termed Mr Clean by his courtiers, but his life ended as bhrashtachari no 1," Modi had said.
Accusing the prime minister of lowering the dignity of his office, Gehlot said, "Using such words reflects his (Modi's) weird mentality and hatred."
He alleged that the prime minister was an "expert in speaking lies" and was shying away to talk about "real issues".
Claiming that Modi was "jolted" by the corruption allegations in the Rafale deal, he said the Congress will continue to rake up the issue till the prime minister is held accountable.
Gehlot said Modi has been continuously levelling allegations against Gandhis though no one from the family has been a prime minister in the past 30 years.
"Prime Minister Modi has been defaming the great leaders of the Congress through baseless and illogical talks," he said in a statement.
"Using such words in his speeches shows his frustration," he added
Gehlot said Modi will not become the prime minister again and his "defeat is imminent".
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)