Last week, Airtel's board had approved plans to raise Rs 32,000 crore through equity and bond sales.
Bharti Airtel has received approval from the Securities and Exchange Board of India (SEBI) for a rights approval worth Rs 24,000 crore.
"SEBI has given its nod for the rights issue" a senior government official said on April 8.
The promoter group of Bharti Airtel, including the Bharti Group and SingTel, will subscribe to Rs 11,785.7 crore in the Rs 25,000-crore rights issue while Singapore government's investment arm GIC Pvt. Ltd will be subscribing to shares worth Rs 5,000 crore.