The BJP MPs will observe the fast on 12 April in their respective constituencies.
MIM party chief Asaduddin Owaisi hit out saying, "If the prime minister wants to fast for losing whole session of parliament, I want to ask the honourable prime minister where is his sense of duty lost, wherein, in the past four years thousands of farmers committed suicides".
According to sources, the party will also observe the birth anniversary of Jyotiba Phule, a social reformer from backward caste, on April 11 as Samta Divas (equality day).
He will unveil the plaque inaugurating the diamond jubilee building, palliative care centre (Mahvir Ashray) at Sriperumbudur, Day care center and nurses quarter at the Adyar Cancer Institute. The BJP MPs will observe fast in their constituencies while Shah will hold a sit-in in Karnataka.
Parliament couldn't function for the entire 22 days of the second part of the Budget session due to the commotion in both Houses. "I will be fasting".
In a bid to embarrass the opposition party some more, Prime Minister Narendra Modi has said that he will be joining the other BJP legislatives in a day-long fast April 12 to protest the recent washout of the Budget session of Parliament. PM Modi is also fasting. The BJP holds opposition exclusively responsible for disruptions in Parliament because of which hardly any legislative business could be carried out, especially in the second half of the Budget Session.More news: Cosby back on trial for sexual assault in #MeToo world
Lauding the Nitish Kumar Government of Bihar, Modi said, "This Government has put an end to the culture of keeping files pending".
Modi had announced a fast by BJP MPs last week at a party meeting where he had accused the Congress of taking parliamentary proceedings "to a new low" with its conduct in the House.
On Monday, the BJP had dubbed the Congress' day-long fast to uphold communal harmony as a "farce" after senior Congress leaders were caught on camera having a hearty breakfast before heading for the event.
The budget session of Parliament started on January 29 and went into a break on February 9.
Only two out of eight bills planned for this session could be introduced.