Mohammad Yunus is the father of MicroCredit. Here is an excerpt from Wikipedia-

"Microcredit is the extension of very small loans to the unemployed, to poor entrepreneurs and to others living in poverty who are not bankable. These individuals lack collateral, steady employment and a verifiable credit history and therefore cannot meet even the most minimum qualifications to gain access to traditional credit. Microcredit is a part of microfinance, which is the provision of financial services to the very poor; apart from loans, it includes savings, microinsurance and other financial innovations.