Government forces fired tear gas and used batons to quell thousands of anti-India protesters who turned violent on Friday after Eid prayers at mosques in the Indian portion of Kashmir.
The protesters, waving Pakistani and pro-militant flags and chanting pro-independence slogans, hurled stones at government forces, who retaliated with tear gas.
The tensions started as a court two weeks ago upheld a colonial-era law banning the slaughtering of cows, which are worshipped by Hindus, and the selling beef in the region - a decision resented by Muslims.
The law, which has not been enforced for seven decades, made the slaughter of cows punishable by up to 10 years' imprisonment and a fine.
Kashmir is mainly Muslim, while most people in the rest of India are Hindus.