I remember my Dad telling of his Islamic colleagues at Lucas battery factory in Birmingham. Yes, they would all pack into a normal three-bed house, but they would all bunce into buying that house for cash.
Then onwards to the next house, and the next house, and no mortgages.
It was all done on the honour system of Hawala. The money would be sent from Punjab And Kashmir to England. The sooner the house was paid for, the sooner more relatives could come to seek a better life.