Hours after Union minister Amit Shah's Hindi language pitch, the Congress on Saturday said the three-language formula should not be tinkered with and controversies must not be stirred up on "emotive" issues settled by Constitution-makers.
The opposition party also said no indication should be given of a rethink on the "three-language formula" as it will create strife and unrest in the country.
The three languages formula is commonly understood to comprise Hindi, English and the regional language of the respective states.
Home Minister Shah on Saturday pitched for a common language for the country and said as Hindi is spoken the most, it can unite the whole country.
He also asked everyone to use their native languages as much as possible, but said efforts will be made to expand Hindi's reach to different parts of the country.
Asked about Shah's remarks, Congress spokesperson Anand Sharma said: "Let me make it very clear, if that is true then the Home Minister of India should know that Hindi has been declared as the official language long back."