He also advocated death sentence for those indulging in conversion and cow slaughter and said the government will pass a law in this regard.
The BJP MP sought to justify his theory of four children by raising the popular stereotype about Muslim community.
Without naming the minority community, he said: "The concept of four wives and forty children just won't work in India but it is high time that every Hindu woman must produce at least four children to protect the Hindu religion".
The BJP MP sought to differentiate between conversion and 'ghar vapsi', the process of converting minority communities to Hinduism aggressively pursued by RSS affiliates.
"Those who engage in conversion and cow slaughter should be punished with death penalty. But I must add here Ghar vapsi is no conversion but just a process to guide these people to the fair where they actually belong," maintained the controversial MP.
"Just wait for some time. The government will bring a law which will guarantee death penalty to those responsible for conversion and death penalty," added Sakshi Maharaj.
When asked about Ram Mandir, the issue which is pending in the Supreme Court, the BJP MP said building of the mandir is "inevitable".
"No power in this world can stop construction of Ram Mandir in the holy land of Ayodhya. The mandir will be build come what may," he predicated.
Sakshi Maharaj has been in repeated controversies because of his statements. He had created a furore when he termed the religious madarsa a source of terrorism in India.