It is narrated from Sayyiduna Abu Dharr (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "O Abu Dharr! I see that you are weak, and I love for you what I love for myself. Never take command over even two people, and never take charge of an orphan's wealth."
(35) Chapter: One who chose to enter into them (bequests) and to take up the guardianship of orphans because he sensed strength and trustworthiness in himself.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الوصايا / 12661