In a BSE filing, the Anil Agarwal-led firm said: "Vedanta Ltd and Cairn India have received No Objection from BSE and the National Stock Exchange of India vide their Observation Letters dated September 10, 2015 in relation to merger of Cairn India with Vedanta Ltd."
No Objection letters has been issued by the stock exchanges after receiving comments from market regulator Securities and Exchange Board of India, it added.
In June, India's largest private miner Vedanta Ltd had announced it will absorb oil firm Cairn India in a $2.3 billion all-share deal to create the country's largest diversified natural resources firm.
London-based Vedanta Resources had a debt of $7.7 billion as on March 31, 2015 while its Indian arm Vedanta Ltd had another $4.57 billion debt.
While zero-debt Cairn India, on the other hand, has $2.85 billion cash reserve.