BJP's oldest ally also targeted Congress leader Kapil Sibal, saying it has never seen him "taking up the cause of Hindus in Kashmir as as he did for Bangladeshi Muslims in Assam".
"Those who are saying that India will break into pieces because of Modi are the ones who have divided the country. Instead of abusing Modi, Congressmen should introspect," an editorial in Sena mouthpiece Saamana said.
"Those in Congress who are making such allegations should either do vipassana (meditation) in Ramdev's ashram or else they will have to be admitted in a mental hospital after May 16 poll results as they have lost mental balance," the Sena said.
Congress on Sunday attacked BJP and its prime ministerial candidate for the violence in Assam, saying it was a result of "communal polarisation" done by them to garner votes.
32 people were killed, several others injured and thousands rendered homeless in two districts of Assam after attacks by militants belong to the anti-talks IK Songbijit faction of National Democratic Front of Bodoland (NDFB-S).
The Sena said, "Assam is burning. Peace eludes the Kashmir valley. We never saw Kapil Sibal taking up the cause of Hindus in Kashmir as he did for Bangladeshi Muslims in Assam."
"Sibal and Omar Abdullah (J&K chief minister) are afraid that after Modi comes to power, Bangladeshis will be driven out from Assam and Hindu Pandits will be brought back with honour in Kashmir," the Sena said.
Abdullah deliberately ignored the plight of Hindus in Kashmir, it alleged.