Sukuk funding helps to extend the bank's funding maturity profile.

If Congress does not vote to extend the bank's charter, it will close at the end of June.

The proceeds will be used to extend the bank's term liabilities and expand its foreign currency deposit unit funding base.

The Dáil has voted 83-74 to extend the bank guarantee for a further three months ahead of the lapse at midnight of the previous guarantee.

Lawmakers last fall extended the bank's charter for nine months, temporarily averting a shutdown while they sought a long-term solution.

But the Justice Department extended the bank's scrutiny through 2017, after authorities said they discovered other possible violations the bank had not revealed.