Is it permissible to refrain from renting rooms to some unmarried young men who engage in inappropriate behavior inside or outside the lodging, such as drinking alcohol and speaking with female residents, under the pretext that no rooms are available, in order to avoid problems that might arise if their stay is refused, knowing that the law requires their acceptance?

It is obligatory to strive to prevent immorality in a hotel, but lying is a sin that leads to immorality and Hellfire. Therefore, one must guard against lying and use "ma'areedh" (euphemisms or ambiguous statements), which are words that the listener understands differently from what the speaker intends, for "ma'areedh" provide an escape from lying. The Companions and the Salaf used them to avoid lying.