"Would Parliament be allowed to function by BJP and the opposition? It is their credibility at stake! I hope better sense would prevail," Singh commented in micro blogging site Twitter.
Singh, who is also the former All India Congress Committee (AICC) in-charge for Uttar Pradesh and hails from BJP-ruled Madhya Pradesh, also targeted the BJP over the issue of illegal sand mining.
"Shahnawaz-"BJP is opposed to Sand Mining Mafia in UP". Would BJP take action against Sand Mafia operating in MP under BJP CM's patronage?", he said in his Twitter posting.
BJP leader Shahnawaz Hussain's remarks were in context of Uttar Pradesh IAS officer Durga Shakti Nagpal's suspension.
Digvijay has earlier also charged that the sand mafia is running the governments in both Uttar Pradesh and Madhya Pradesh.
In another Tweet, the Congress leader said criminal elements are much less in number in Congress as compared to other parties.
According to him, crime cases against parties like Shiv Sena was 31 per cent, 28 per cent against Janata Dal United, 26 per cent against Rashtriya Janata Dal, 23 per cent against Trinamool Congress, 22 per cent against Samajwadi Party, 18 per cent against Bahujan Samaj Party, 13 per cent against BJP, 11 per cent against Nationalist Congress Party, and only eight per cent against Congress.