Future of retail at stake: Why Amazon is feuding with Biyani and Ambani

A legal spat between Amazon.com Inc. and its Indian partner that started before an arbitrator in Singapore just got fiercer in a court in New Delhi.

The US e-commerce giant and Future Group, whose assets billionaire Mukesh Ambani’s Reliance Industries Ltd. recently agreed to buy for $3.4 billion, are locked in a dispute over that deal. Amazon says Future violated a contract with the sale to its rival and wants to halt it, while the indebted Mumbai-based firm says it would collapse if the transaction were to fail.

The Jeff Bezos-led e-tailer has accused Future and its founder Kishore Biyani of flouting disclosure rules, according to court filings seen by Bloomberg.