Musnad Ahmad 30:1810

Qutaybah narrated to us, Layth ibn Sa'd narrated to us, from Ibn 'Ajlan, from al-Qa'qa' ibn Hakim, from Abu Salih, from Abu Hurayrah, from the Prophet, peace and blessings of Allah be upon him, who said: "The Muslim is the one from whose tongue and hand the people are safe. And the believer is the one whom the people trust with their blood and their wealth."