Maliks Muwatta Book 17, Hadith Number 12.Maliks Muwatta Book 17. Zakat Section : The Zakat on the Property of Orphans and Trading on their Behalf. Yahya related to me from Malik that he had heard that Umar ibn al-Khattab said, “Trade with the property of orphans and then it will not be eaten away by zakat.” Related Previous Post Maliks Muwatta Book 17, Hadith Number 13. Next Post Maliks Muwatta Book 17, Hadith Number 11.