Chapter 55: Wills and Testaments (Wasaayaa)
Nafi' said: "Ibn 'Umar never refused to be appointed as guardian." The most beloved thing to Ibn Sirin concerning an orphan' s wealth was that the orphan' s advisor and guardians would assemble to decide what is best for him. When Tawus was asked about something concerning an orphan' s affairs, he would recite: '... And Allah knows him who means mischief from him who means good...' (V 2:220). 'Ata said concerning some orphans, "The guardian is to provide for the young and the old orphans according to their needs from their shares."
Sahih al-Bukhari 2767