Русско-англо-русский юридический словарь

As a general rule, mortgage companies will allow you to borrow three times your salary, or two and a half times your joint salaries if you're buying with someone else. (bbc.co.uk)

It is a maxim of equity that equity will not, as a general rule, aid a volunteer – meaning that unless the intended beneficiary of a transaction has given consideration, equity will not compel the completion of a defective transaction. (Equity's Darling)