Знакомые не занимают ему денег до среды (his acquaintencesacquaintances don't lend him money "until"till Wednesday "(even for a short period of time)
When you ask someone to lend you some money, you usually promise to pay it back and name the day. It'sIt doesn't matter what day is mentioned. But it means that the person is so poor (having nothing to sleep on) and he can't be relied on.He won't be able to return the sum, when he promised to do it.