Hibban bin Abi Jabalah (may Allah have mercy on him) says that the Messenger of Allah (peace and blessings be upon him) said: "Everyone has more right to his wealth than his children, his parents and all people."
This is mursal; Hibban bin Abi Jabalah al-Qurashi is one of the Tabi'in (Successors).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المكاتب / 21618