Sunan Ibn Majah — The Chapters on Charity — Hadith No: 2401
Translation
It was narrated from 'Amr bin Shu'aib, from his father, that his grandfather said:“The Messenger of Allah (ﷺ) said: 'Whoever is entrusted with an item for safekeeping, is not responsible for it (so long as he is not negligent).' ”