There were foreigners among both the Christian and Jewish inhabitants of Frankfurt. Mostly, they had only temporary right of residence, and were not allowed to set up in business on their own account, except during the trade fairs. Most of the city's servants and journeymen came under this heading. When Jewish families took in foreign Jews they were required to report the fact to the city council and pay a regular fee ( overnight fee ). It was forbidden for the city's resident Jews to go into business with foreign Jews, just as it was forbidden for foreign Jews to engage in money and moneylending and trade in commodities, except during trade fairs. Foreign Jews could acquire right of residence by marrying into a Frankfurt Jewish family although they were required to pay 25 guilders in gold for this, which presupposed a certain degree of wealth.