A minor, although he has reached the age of sixteen years, shall not, even by will, dispose for the benefit of his guardian.
A minor, who has reached the age of majority or has become emancipated, shall not dispose, either by gift inter vivos or by will, for the benefit of the person who has been his guardian, unless the final account of the guardianship has first been rendered and discharged.
Excepted in the above two cases are the ascendants of minors who are or have been their tutors.