Rijiju said despite knowing about the transaction, the government did not make public the information or "play politics" over the issue.
"The issue of Zakir Naik's Islamic Research Foundation donating Rs 50 lakh to Rajiv Gandhi Foundation or its related body ... We knew it more than a month ago. But we did not want to play politics.
The Islamic Research Foundation (IRF), founded by Naik, had donated Rs 50 lakh to Rajiv Gandhi Charitable Trust (RGCT), an associate entity of Rajiv Gandhi Foundation, in 2011 but the amount was returned to IRF by RGCT in July this year.
Both the IRF and the RGCT were registered under the Foreign Contribution Regulations Act and such donation of foreign funds from one FCRA registered NGO to another is authorised and legally permitted.
Also Read
He said it was "unfortunate that rather than introspecting about what Congress has done, they are just making unnecessary accusation that the government is leaking out documentation."
"How can we leak documents like that?" he said on the sidelines of an event held to honour the families of gallantry award winners of central paramilitary forces.
The Congress had accused the government of leaking this information.
be strictly checked and we are doing it."
While replying on Naik's recent statement asking what wrong has he done, Rijiju said religion and terrorism cannot go hand in hand.
"We abhor equating religion with terrorism. Anybody who propagates terrorism will not bear anything with regard to identity or religion. We look at things that way. National security is most important," Rijiju said.
The RGCT, a registered, not-for-profit organisation, was established in 2002 to address the development needs of underprivileged people in the country, especially the rural poor. It works in the poorest regions of Uttar Pradesh, one of the least developed states in the country and Haryana.
The Home Ministry had suspended Joint Secretary G K Dwivedi, who was heading the foreigners division which deals with the FCRA related issues, and three other officials for renewing the licence of IRF.
Congressspokesperson Abhishek Manu Singhvi had owned upthe donation but claimed it was unsolicited and a one-off affair.
Singhvi emphasised that the donation preceded IRF's embroilment in allegations of terror and forced conversions, adding Naik's NGO was not on the watchlist at the time.