Khurshid alias Feroz Ahmad enthusiastically made the chant, a favourite of the Hindu far right that wants a Ram temple at the place in Ayodhya where the Babri mosque stood before being razed down in 1992, after Chief Minister Nitish Kumar won the trust vote on July 28.
Khurshid was later inducted into the ministry and now holds the minority welfare portfolio.
Khurshid's secular protestations did not go down well with the Muslim clergy and some politicians but his own party backed him.
Sohail Ahmad Qasmi, the Mufti of Imarat Shariah, Patna, said,"Any person who says he worships both Rasul and Ram, bows his head before every faith, then shouts 'Jai Sri Ram', that person is automatically expelled from Islam."
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Khurshid also drew criticism from senior RJD leader and former minister Abdul Bari Siddiqui, who said it appeared that the minister had got the "badshahat" (kingdom) somewhere.
NCP leader and former union minister Tariq Anwar said it showed that the minister can stoop to any level to grab power. "People will teach a lesson to such people," he said.
"If my statement has hurt anyone, then I tender my apology. My statement has been distorted."
Khurshid said Nitish Kumar asked him to reconsider his statement if it hurt sentiments of people and tender an apology.
JD(U) spokesman Neeraj Kumar defended Khurshid and said the slogan raised by him was not intended to hurt anyone's religious sentiments.
"This is the country where great personalities like Mahatma Gandhi used to take the name of Ram and Rahim in the same breath. This a conspiracy to finish the Ganga-Jamuni (inclusive) tradition," he said.