Ramesh shot off a letter to the Gujarat Chief Minister addressing him "My dear Shri Narendra Modi", a day after Modi took him on in his home district of Chikmagalur in Karnataka in connection with his remark made four years ago that "India deserves a Nobel Prize for filth".
"I read in the newspapers this morning that at a rally of yours in Chikmagalur on April 13 you accused me of saying India is the dirtiest and laziest country in the world during my foreign visits.
"It is clear that even by mistake, you are clearly incapable of speaking the truth," the senior Congress leader said, putting Modi in the line of fire.
Addressing a rally in Chikmagalur yesterday, Modi had slammed Ramesh alleging that during his foreign visits the Union Minister had called India the "dirtiest and laziest" country in the world.
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"Nowadays, there is a minister in Congress who has studied in a foreign country and was born here in Chikmagalur.
Responding to Modi's allegation, Ramesh said, "Just for the record, I have said that India deserves a Nobel Prize for filth. I said this in New Delhi some four years ago and I continue to hold this view."
"I do not expect you to respond to this letter but I thought I should set the record straight," he added.
"I have also said that India has the largest number (and proportion) of people practicing open defecation. I stand by that statement also.
"I have also said that India's salvation lies in sanitation and not just in spirituality, a view that I continue to hold and which you have also endorsed," Ramesh added.