"He is only expressing here what we all feel very passionately as far as Rahul Gandhi is concerned and very strongly and bitterly as far as Narendra Modi is concerned," he told reporters on the sidelines of an event here.
The External Affairs Minister said Congress is grateful to Singh for making the remark on BJP's prime ministerial nominee which has been felt by party members across India.
Addressing a press conference here, Singh said that Narendra Modi as prime minister will be "disastrous" for the country.
"If you measure the strength of Prime Minister by presiding over mass massacre of innocent citizens on streets of Ahmedabad, then I do not believe in it... I do not think that this kind of strength this country needs least from its Prime Minister," Singh had said.
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When asked to comment on the prime minister's statement, Khurshid said that ministers only speak when the PM wants them to speak.
Lauding the Prime Minister, Khurshid said that he had the "privilege and honor" of working with a remarkable man and genius economist through difficult times.
"We have had unique privilege and honor to have served with such a remarkable man and a gentle soul and of course an economic genius through very difficult times. We still have the last lap to run. The victory lap is yet to be run," he added.
Asked about generational change in the Congress, Khurshid referring to Rahul Gandhi said that the young leadership is already leading the party from the front.