The Hawala scandal or hawala scam was an Indian political scandal involving payments allegedly received by politicians through four hawala brokers, the Jain brothers. It was a US$18 million bribery scandal that implicated some of the country's leading politicians.
Vineet Narain, 1999, Corruption, Terrorism and Hawala Scandal in Hindi ebook
Kapoor, S. (1996), Bad Money, Bad Politics: The Untold Hawala Story, Har–Anand Publications, Delhi - cited (p. 22) by Ashok V. Desai in The Economics and Politics of Transition to an Open Market Economy: India, OECD Working Paper 155 accessed at http://www.oecd.org/dataoecd/18/3/1921937.pdf 26 May 2011
Hawala. An Informal Payment System and Its Use to Finance Terrorism by Sebastian R. Müller (Dec. 2006), ISBN 3-86550-656-9