Without taking the names of the two leaders, Lalu tweeted, "Pehle guru ko roka tha, ab chele ka number hai. (Earlier I had stopped the teacher, now it is the turn of his disciple)."
BJP leaders touring the state were quick to react to the tweet and said Prasad was daydreaming about stopping their prime ministerial candidate.
"For stopping Modi, Prasad will first have to stop BJP in Saran constituency from where his wife Rabri Devi is contesting. Our candidate Rajiv Pratap Rudy is winning from there, so how will he stop Modi in the country? Syed Shahnawaz Hussain, BJP spokesman told reporters at Patna airport before leaving for election campaigning in Siwan and Motihari.
Lok Janshakti Party president and BJP ally Ram Vilas Paswan rubbished Prasad's tweet, saying first "he will have to become something then only he will be able to check Modi. During Advani's rath yatra, Prasad was the chief minister. Today he is nothing."
Talking to reporters, former deputy chief minister Sushil Kumar Modi called Prasad's tweet "just a case of chori and sinajori (commit theft and argue over it)" alluding to the RJD leader's involvement in scams.