August 18

...Everyone, whether man or woman, should hand over to a trusted person a portion of what he or she earneth through trade, agriculture or occupation, for training and education of children, to be spent for this purpose with the knowledge of the Trustees of the House of Justice. 
(Baha’u’llah, 'Tablets of Bahá'u'lláh Revealed after the Kitáb-i-Aqdas’; ‘The Compilation of Compilations’, vol. I, Baha’i Education)