Section 120
SEC. 120. Conveyance and encumbrance made by persons belonging to the so-called "non-Christian Filipinos" or national cultural minorities, when proper, shall be valid if the person making the conveyance or encumbrance is able to read and can understand the language in which the instrument or conveyance or encumbrances is written. Conveyances and encumbrances made by illiterate non-Christian or literate non-Christians where the instrument of conveyance or encumbrance is in a language not understood by the said literate non-Christians shall not be valid unless duly approved by the Chairman of the Commission on National Integration.