Paswan, a senior minister in Modi’s cabinet and the founder of the Lok Janshakti Party (LJP) passed away on Thursday night.
The Prime Minister also consoled Ram Vilas Paswan’s wife and son Chirag Paswan.
The body of Ram Vilas Paswan was brought to 12 Janpath on Friday morning from the hospital where he breathed his last.
His body will be kept at his residence till 2 p.m. after which it will be flown to Patna.
In Patna, his dead body will be kept at the LJP office for people to pay tributes to their leader.
The last rites will take place in Patna on Saturday.
The Union Minister had undergone a heart surgery last Friday.
Besides, Prime Minister, several other leaders like Ravi Shankar Prasad, Giriraj Singh also paid floral tribute to the LJP leader.
Ram Vilas, 74, who had completed 50 years in active politics last year, was first elected as an MLA in 1969.
His death came just days after Chirag Paswan decided to leave the NDA in Bihar and fight the Assembly polls on his own.
One of the leading Dalit leaders in the country, Ram Vilas Paswan had been Minister in the Narendra Modi government, the Manmohan Singh-led UPA-1 government as well as the Atal Bihari Vajpayee-led NDA government at the Centre.
Born in Khagaria district of Bihar on July 5, 1946, he had been selected for police service but chose to join politics.