Disposition in favour of a person who has rendered domestic help or care and assistance

A disposition made by a sick and old person, having ascendants, descendants, collaterals till the fourth degree or spouse, in favour of a person who has rendered domestic help or care and assistance to such person shall not exceed one third of the value of inheritance. However, a disposition made in favour of ascendants and descendants, collaterals till the fourth degree or the spouse of the testator is valid.