Kumar mingled with the devotees and embraced many of them to extend greetings.
Later talking to reporters, he said that Eid symbolises love and affection of one with others.
"I offer greetings to all Muslim brothers and sisters on Eid and pray that communal harmony and brotherhood continue in Bihar," Kumar said.
"The country is facing many a problem but mutual love and sense of brotherhood among citizens is its biggest strength. I pray that this strength of unity remains intact," he added.
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