Mukesh Ambani plans to sell a 20 percent stake in RIL’s refining and petrochemicals business to Saudi Aramco for $15 billion. Reliance Industries has termed as “premature” an attempt by the Indian government to enforce non-payment of an estimated $4.5bn in an international arbitral award of the Panna-Mutka and Tapti (PMT) oil field production-sharing contracts case.