"Truth is always bitter. They (Congress) were disturbing Parliament even earlier also. This is just an excuse," Singh said outside Parliament.
Members of Congress, TMC, RJD, JD(U) staged a walkout from Lok Sabha while pressing for apology from Singh for his remarks against Congress leaders.
Singh, an MP from Bhadoi in Uttar Pradesh, had made the remarks in the House on Wednesday while participating in a discussion on drought situation. The remarks were later expunged by the Speaker.
When it was pointed out to him that crores of rupees were going waste for not allowing Parliament to function, he said people of the country should know who is not allowing Parliament to function and they will decide.