"The BJP government in the state is anti-farmer and it fired bullets at them (during an agitation in June this year). Therefore, I have taken a vow that I will not wear a garland till I ensure an ouster of this government from the state," Scindia said, speaking at a rally at Meerkabad Panchayat in Mungaoli Assembly constituency.
A by-election is due for the Mungaoli seat following the death of senior Congress MLA Mahendra Singh Kalukheda.
Scindia also took a dig at Chouhan for promising anything, asking people to demand the moon from him.
"I am sure he will promise to bring you the moon," Scindia said, criticising Chouhan for visiting Mungaoli with an eye on the by-poll and making tall promises.
Mungaoli is part of Scindia's Lok Sabha constituency, Guna.
The Congress leader also criticised Prime Minister Narendra Modi's government for demonetisation which he said affected people, especially women, in a big way.