Saini, who is an MP from Kurukshetra, was unanimously elected as the leader of the state BJP legislature group and will be sworn in later in the day, party MLAs Subhash Sudha and J P Dalal told reporters.
Khattar's test report came positive on Monday, six days after he had attended a meeting with Union Jal Shakti Minister Gajendra Singh Shekhawat, who was later found infected with the virus.
Haryana Chief Minister Manohar Lal Khattar courted controversy with his statement that the Muslim community needs to give up consuming beef in order to continue living in India.
The CM also said the damage caused to some media personnel's equipment during the violence will be taken care of the government.
Farmers were carrying black flags and shouting slogans against the BJP-led government as they attempted to march towards Kaimla village.
"Centre and state will soon begin the process of giving reservation, following the Delhi High court order," Khattar told reporters in a joint press conference along with All India Jat Aarakshan Sangharsh Samiti chairperson Yashpal Malik.
With several Hindu outfits objecting to Friday prayers being offered in open spaces in Gurgaon, Haryana Chief Minister Manohar Lal Khattar said the practice of offering namaz in the open 'will not be tolerated.'
At present, the BJP has 41 MLAs in the 90-member House while the JJP has 10. The ruling combine also enjoys the support of six of seven independents.
Expressing anguish and concern over the recent incidents of rape in the state, the CM said though the police were dealing with such cases as required under the law, it had been decided to make provisions of "harsher punishment for rape".
The chief minister accused the media of "running a misleading and factless campaign" against him and shared on Twitter a full video of the event.
Haryana government's "anti-women mindset" has been exposed, said the Congress.
Senior Bharatiya Janata Party leader and former Minister Anil Vij on Sunday said he will stake claim for the chief minister's post if the party returns to power in Haryana after the October 5 assembly polls.
Khattar held his Punjab counterpart Amarinder Singh responsible for the thousands of farmers marching to Delhi.
Hours before the ceremony, Saini visited the Valmiki Bhawan and offered prayers at a gurdwara and the Mansa Devi temple in Panchkula.
Haryana's new Chief Minister Nayab Singh Saini said they have presented a letter of support of 48 MLAs to the governor and asked him to convene an assembly session on Wednesday so that the Bharatiya Janata Party government can prove its majority in the House.
Manohar Lal Khattar is a low profile Rashtriya Swayamsevak Sangh leader who is known for his quiet work on the field and in the BJP that has earned him the reputation of a tough task master with a no-nonsense approach.
Manohar Lal Khattar took oath as Haryana chief minister for the second time on Sunday and will lead the Bharatiya Janata Party-Jannayak Janta Party coalition government in the state. JJP leader Dushyant Chautala took oath as the deputy chief minister.
In a faux pas, Haryana Chief Minister Manohar Lal Khattar forgot Olympic silver medallist P V Sindhu's full name and also wrongly called her from Karnataka. "It's a proud moment for us that two of our daughters won medals on Raksha Bandhan festival. Sakshi Malik from Haryana and Sindhu (asks others what is her name) ... P V Sindhu from Karnataka (Sindhu is from Hyderabad)," he said. Khattar was addressing a huge gathering during the reception which was accorded by the Haryana government to the Olympic bronze medallist Sakshi Malik in Bahadurgarh town near Rohtak after she arrived this morning from Rio de Janeiro.
Ahead of the crucial floor test of the newly elected Nayan Singh Saini-led Bharatiya Janata Party government in Haryana, Jannayak Janta Party (JJP) has issued a whip to its MLAs to remain 'absent' from the state assembly at the time of voting on Wednesday.
Haryana Chief Minister Manohar Lal Khattar on Wednesday sought four additional companies of central forces following communal clashes in the state and said a battalion of the India Reserve Battalion will also be deployed in Nuh.
Saini's elevation as Haryana chief minister fits in with a pattern that has gathered pace in the BJP after the Congress and its allies like the Samajwadi Party in Uttar Pradesh and the Rashtriya Janata Dal in Bihar began making an aggressive bid to woo the largest group of communities and politically most significant, especially in Hindi-speaking states, by pushing for a caste census.
Speaking at the event, Khattar said, "Some people who have a hobby of social media go to sleep at night after changing the chief minister. They say that this chief minister is going, he is going and a new chief minister will come tomorrow. Whether the new CM comes or not, you just need work to be done."
Hours after he resigned as Haryana chief minister along with his cabinet ministers, senior Bharatiya Janata Party leader Manohar Lal Khattar Tuesday hinted that he may be fielded by the party in the coming Lok Sabha polls.
The situation on Tuesday remained tense in some parts of Jat dominated areas like Rohtak and Sonipat while curfew was lifted in Jind district.
Amid a plethora of Bharatiya Janata Party bigwigs, Manohar Lal Khattar and his council of ministers took the oath of office at Panchkula on Sunday.
Saini, 54, a low profile OBC leader, rose through the ranks in the party and was unanimously elected as the leader of the state BJP's legislature group at a meeting held in Chandigarh on Tuesday.
Some of the farmers allegedly tried to block Khattar's motorcade but police managed to provide a safe passage to the chief minister, sources said.
He said the police is investigating the matter and further action will be taken once the inquiry report comes.
Haryana Chief Minister Manohar Lal Khattar on Friday claimed the 15-year-old Dalit boy who died in Sonipat had committed suicide and announced that job will be given to a family member, apart from compensation.
Amid deepening schisms within the ruling Bharatiya Janata Party in Haryana over poll ticket distribution, party leader Karan Dev Kamboj on Wednesday indicated that the rebellion could have been prevented if Chief Minister Nayab Saini had a 'say' on the allocation process.
Farmers had waved black flags at the chief minister's convoy while it was crossing Agrasen Chowk. They also raised slogans against the government.
Five MLAs -- four from the BJP and one independent -- were also sworn in as ministers. However, former home minister and six-term MLA from Ambala Cantt, Anil Vij, has not found a place in the new cabinet.
On a day the Punjab assembly passed a resolution seeking immediate transfer of Chandigarh to the state, Haryana Chief Minister Manohar Lal Khattar said the city will remain the joint capital of both states.
Haryana government said it is committed to construction of Satluj-Yamuna Link and has urged the Centre to seek early hearing on the matter.
The Bharatiya Janata Party on Wednesday named 72 more candidates for the Lok Sabha elections, including Union ministers Nitin Gadkari, Piyush Goyal and Anurag Singh Thakur, and former chief ministers Manohar Lal Khattar, Trivendra Singh Rawat and Basavaraj Bommai.
The chief minister said he discussed with Tomar about the ongoing farmer protests. "Effort is to find solutions through dialogue," he said.
Former chief minister ML Khattar also indicated the BJP government was not averse to a floor test and that six Jannayak Janta Party MLAs are with it.
The Punjab CM's reaction has come after Khattar alleged on Saturday alleged that despite wanting to talk to him over the issue, he did not respond even when telephone calls to his office were made for three days.
Khattar, 66, had developed fever and body ache three days prior to testing positive for COVID-19.
"There is a clear hand of the Punjab government in it. Here in Haryana, former chief minister Bhupinder Singh Hooda and other Congress leaders besides some Left leaders are instigating farmers to take law in their hands," Haryana chief minister M L Khattar said