Civil Code of the Philippines: Art. 5.

 Art. 5. Acts executed against the provisions of mandatory or prohibitorylaws shall be void, except when the law itself authorizes their validity.A mandatory law is one which prescribes some element as a requirement (i.e., willsmust be written – Article 804; form of donations – Article 749)A prohibitory law is one which forbids something (i.e., joint […]