§1. For a juridic person to be able to accept a foundation validly, the written permission of the ordinary is required. He is not to grant this permission before he has legitimately determined that the juridic person can satisfy both the new obligation to be undertaken and those already undertaken; most especially he is to be on guard so that the revenues completely respond to the attached obligations, according to the practice of each place or region.
§2. Particular law is to define additional conditions for the establishment and acceptance of foundations.
Source: Code of Canon Law (Vatican.va)