"Well, I think it's not only a legal but a moral obligation that every banking institution in India has to recover the last pie," Jaitley said.
The government cannot accept a "situation where 15 or 20 people are sitting on so much money of the banks, that the ability of the banks to lend to thousands of others" get severely impacted, he said.
"...Whatever steps the banks will take in this matter, the government of India will stand behind them but also actively encourage them to protect their own interest which is also the larger public interest because the public money is involved in the banks.
The Supreme Court will tomorrow hear a plea of 13 banks, which had advanced loans of over Rs 9,000 crore to Mallya's firm, seeking a direction to restrain him from leaving India.
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Talking about bad loans in the banking system, Jaitley
said there are two kinds of NPAs, one is because of economic slowdown while the other emanates from questionable practices.
There are NPAs on account of the industrial downturn in sectors like steel, infrastructure and power.
"But there are cases, which border more on questionable practices and there I think the provision of whatever laws exists will come into play," Jaitley said.
Gross Non Performing Assets (NPAs) ratio of the public sector banks increased from 5.43 per cent as on March 2015 to 7.30 per cent as on December 2015.
Gross NPAs of PSBs increased from Rs 2,67,065 lakh crore in March 2015 to Rs 3,61,731 lakh crore in December 2015.